Angle adjusting device of wind power blade

Abstract

The utility model relates to the technical field of wind power blades, in particular to an angle adjusting device of a wind power blade, which comprises a hub seat, a plurality of blades are arranged on the outer side of the hub seat, the blades are connected with the hub seat through a connecting assembly, a driving assembly used for driving the blades to rotate is arranged in the hub seat, and the driving assembly is connected with the hub seat. According to the utility model, the angles of the blades are adjusted through the driving assembly, and the blades are leveled when the wind is strong, so that the damage to the blades due to too high rotating speed of the strong wind is reduced, and the stable operation of equipment under the condition of various wind speeds is ensured; when the wind is small, the lift coefficient of the blades can be optimized by adjusting the angles of the blades and increasing the wind energy capture of the blades, and the energy conversion efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade technology, and in particular to a wind turbine blade angle adjustment device. Background Technology

[0002] Wind turbine blades are key components in wind turbine units used to capture wind energy. They generate electricity by rotating the blades when blown by the wind.

[0003] In actual use, the wind in nature is uncontrollable. The wind will be strong and weak, and the installed blades cannot be changed. When the wind is strong, the blades will rotate too fast and cause damage. When the wind is weak, the blades will rotate at a low speed and generate less electricity. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a wind turbine blade angle adjustment device.

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

[0006] Design a wind turbine blade angle adjustment device, including a hub seat, a plurality of blades are arranged on the outer side of the hub seat, the blades are connected to the hub seat through a connecting assembly, a driving assembly for driving the blades to rotate is arranged inside the hub seat, and a fixing assembly for fixing the blades is arranged inside the hub seat.

[0007] Furthermore, the hub seat has several holes on its circumference that are adapted to the blades, and the root of the blades passes through and is rotatably connected to the holes.

[0008] Furthermore, the connecting assembly includes a connecting plate that is rotatably connected to the hole. The end face of the connecting plate has a plurality of slots. The root end face of the blade is fixedly connected with a plurality of bolts that are adapted to the slots. The bolts are slidably connected to the slots, and nuts are threaded onto the bolts.

[0009] Furthermore, the drive assembly includes a motor fixedly connected to the hub, a worm gear fixedly connected to the shaft end of the motor, and a worm wheel rotatably connected inside the hub to mesh with the worm gear.

[0010] Furthermore, the drive assembly also includes a turntable fixedly connected to the worm gear, the turntable having a notch on its end face, and the bolt engaging with the notch.

[0011] Furthermore, the fixing component includes an electric actuator fixedly connected to the hub seat and a gear ring fixedly connected to the outer peripheral surface of the connecting plate. The telescopic end of the electric actuator is fixedly connected with teeth, which mesh with the gear ring.

[0012] The present invention provides a wind turbine blade angle adjustment device, which has the following advantages: The present invention adjusts the blade angle through a drive component, thereby leveling the blade when the wind is strong, reducing the risk of damage to the blade due to excessive speed in strong winds, ensuring stable operation of the equipment under various wind speed conditions, and increasing the blade's lift coefficient and improving energy conversion efficiency when the wind is weak by adjusting the blade angle. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the drive component structure of this utility model.

[0016] In the diagram: 1. Hub seat; 11. Blade; 12. Hole; 2. Connecting assembly; 21. Connecting plate; 22. Groove; 23. Bolt; 24. Nut; 3. Drive assembly; 31. Motor; 32. Worm; 33. Worm wheel; 34. Turntable; 35. Notch; 4. Fixing assembly; 41. Electric actuator; 42. Gear ring; 43. Tooth. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1-3 A wind turbine blade angle adjustment device includes a hub seat 1, a plurality of blades 11 are arranged on the outer side of the hub seat 1, the blades 11 are connected to the hub seat 1 through a connecting component 2, a driving component 3 for driving the blades 11 to rotate is arranged inside the hub seat 1, and a fixing component 4 for fixing the blades 11 is arranged inside the hub seat 1.

[0019] It should be noted that the hub seat 1 has several holes 12 on its circumferential surface that are adapted to the blade 11. The root of the blade 11 passes through and is rotatably connected to the holes 12. The holes 12 have annular protrusions inside. The connecting plate 21 has annular grooves on its circumferential surface. The connecting plate 21 and the holes 12 are rotatably connected through the annular grooves and annular protrusions.

[0020] In this embodiment, the connecting assembly 2 includes a connecting plate 21 rotatably connected to the hole 12. The end face of the connecting plate 21 is provided with a plurality of slots 22. A plurality of bolts 23 adapted to the slots 22 are fixedly connected to the root end face of the blade 11. The bolts 23 are slidably connected to the slots 22. Nuts 24 are threaded onto the bolts 23. By inserting the bolts 23 into the slots 22 and then fixing them with the nuts 24, the blade 11 and the connecting plate 21 can be connected.

[0021] Furthermore, the drive assembly 3 includes a motor 31 fixedly connected to the hub seat 1. A worm gear 32 is fixedly connected to the shaft end of the motor 31. A worm wheel 33 that meshes with the worm gear 32 is rotatably connected inside the hub seat 1. The motor 31 drives the worm gear 32 to rotate, the worm gear 32 rotates, and the worm wheel 33 rotates, which in turn drives the turntable 34 to rotate.

[0022] The drive assembly 3 also includes a turntable 34 fixedly connected to the worm gear 33. A notch 35 is provided on the end face of the turntable 34. The bolt 23 abuts against the notch 35. When the turntable 34 rotates, the notch 35 engages the bolt 23, thereby adjusting the angle of the blade 11. The worm gear 33 is rotated through the worm 32. When the motor 31 stops, the worm gear 33 cannot rotate the worm 32, thus creating a self-locking state.

[0023] Based on the above embodiments, the fixing component 4 includes an electric actuator 41 fixedly connected to the hub seat 1 and a gear ring 42 fixedly connected to the outer peripheral surface of the connecting plate 21. The telescopic end of the electric actuator 41 is fixedly connected with teeth 43, which mesh with the gear ring 42. The electric actuator 41 moves the teeth 43. When the blade 11 needs to be rotated, the three electric actuators 41 are first controlled to retract, and then the teeth 43 are moved backward. After the teeth 43 and the gear ring 42 are separated, the motor 31 is started to rotate the blade 11 and adjust the angle. After the adjustment is completed, the motor 31 is turned off. The blade 11 is first fixed by the worm gear 32 and worm wheel 33 to prevent the angle of the blade 11 from changing due to wind. Then, the teeth 43 are moved into the gear ring 42 by the electric actuator 41 for secondary fixing to increase stability.

[0024] Working method: During operation, the hub seat 1 is connected to the fan body, and then the blade 11 is inserted into the hole 12. After insertion, the blade 11 is connected to the connecting plate 21 by the cooperation of bolt 23 and nut 24. The bolt 23 is placed in the notch 35 according to the angle. When the angle needs to be rotated, the three fixing components 4 are opened first, and then the drive component 3 is started to rotate the blade 11. After the adjustment is completed, the drive component 3 is stopped first, and then the fixing component 4 is started to fix it.

[0025] 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. A wind turbine blade angle adjustment device, comprising a hub seat (1), characterized in that: The outer side of the hub seat (1) is provided with a plurality of blades (11), the blades (11) are connected to the hub seat (1) through a connecting assembly (2), a driving assembly (3) for driving the blades (11) to rotate is provided inside the hub seat (1), and a fixing assembly (4) for fixing the blades (11) is provided inside the hub seat (1).

2. The wind turbine blade angle adjustment device according to claim 1, characterized in that: The hub seat (1) has several holes (12) on its circumferential surface that are adapted to the blade (11). The root of the blade (11) passes through the holes (12) and is rotatably connected.

3. The wind turbine blade angle adjustment device according to claim 2, characterized in that: The connecting assembly (2) includes a connecting plate (21) rotatably connected to the hole (12). The end face of the connecting plate (21) is provided with a plurality of slots (22). The root end face of the blade (11) is fixedly connected with a plurality of bolts (23) that are adapted to the slots (22). The bolts (23) are slidably connected to the slots (22). Nuts (24) are threaded onto the bolts (23).

4. The wind turbine blade angle adjustment device according to claim 3, characterized in that: The drive assembly (3) includes a motor (31) fixedly connected to the hub seat (1), a worm gear (32) fixedly connected to the shaft end of the motor (31), and a worm wheel (33) rotatably connected inside the hub seat (1) and meshing with the worm gear (32).

5. The wind turbine blade angle adjustment device according to claim 4, characterized in that: The drive assembly (3) also includes a turntable (34) fixedly connected to the worm gear (33). A notch (35) is provided on the end face of the turntable (34), and the bolt (23) is engaged with the notch (35).

6. The wind turbine blade angle adjustment device according to claim 3, characterized in that: The fixing component (4) includes an electric push rod (41) fixedly connected to the hub seat (1) and a gear ring (42) fixedly connected to the outer peripheral surface of the connecting plate (21). The telescopic end of the electric push rod (41) is fixedly connected with teeth (43), and the teeth (43) mesh with the gear ring (42).

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