Fan blade for wind power generation

Abstract

The fan blade comprises a connecting base, the top of the connecting base is integrally connected with a telescopic sleeve, a driving motor is fixedly installed in the connecting base, a telescopic groove is formed in the peripheral face of the telescopic sleeve, the interior of the telescopic sleeve is rotationally connected with a two-way lead screw, and the two-way lead screw is fixedly connected with the telescopic groove. The bottom of the bidirectional lead screw and the output end of the driving motor are fixedly installed, the two ends of the bidirectional lead screw are connected with threaded sleeves in a penetrating and threaded mode, a rotating seat is integrally arranged on the peripheral face of each threaded sleeve, the tail end of each rotating seat is rotationally connected with a connecting supporting rod, and each connecting supporting rod is slidably connected with the interior of the corresponding telescopic groove in a penetrating mode. And the other end of the connecting support rod is rotationally connected with a blade. The blades are pulled to the outside of the shrinkage sleeve, so that the size of the whole wind power generation device is reduced, the windward area is reduced, the stress of the blades is greatly reduced, and the risks of blade damage and overall overturning of the wind power generation device are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy power generation, in particular to a fan blade for wind power generation. Background Art

[0002] With the rapid development of new energy, the use of wind power generation is increasing. Wind power generation refers to the conversion of wind kinetic energy into electrical energy. Wind energy is a clean, pollution-free, renewable energy source that has been used by people for a long time, mainly through windmills to pump water, grind flour, etc., but now people are interested in how to use wind to generate electricity. Vertical-axis wind turbines do not need to face the wind when the wind direction changes. This is a major advantage over horizontal-axis wind turbines, as it not only simplifies the structural design, but also reduces the gyroscopic force of the wind wheel facing the wind.

[0003] With the advancement of blade materials and manufacturing technology, the power of wind turbines is getting bigger and bigger. The application of large wind turbine blades has improved the efficiency of wind energy capture. However, the blades of existing vertical axis wind turbines are generally fixed, and they may be damaged when encountering severe strong winds.

[0004] To this end, we propose a fan blade for wind power generation. Utility Model Content

[0005] The purpose of the present utility model is to provide a fan blade for wind power generation to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fan blade for wind power generation, comprising a connecting seat, the top of the connecting seat is integrally connected with a shrinkage sleeve, a drive motor is fixedly installed inside the connecting seat, a telescopic groove is provided on the outer circumference of the shrinkage sleeve, a bidirectional lead screw is rotatably connected inside the shrinkage sleeve, the bottom of the bidirectional lead screw is fixedly installed with the output end of the drive motor, both ends of the bidirectional lead screw are threadedly connected with threaded sleeves, the outer circumference of the threaded sleeve is integrally provided with a rotating seat, the end of the rotating seat is rotatably connected to a connecting strut, the connecting strut is slidably connected to the inside of the telescopic groove, and the other end of the connecting strut is rotatably connected to the blade.

[0007] Optionally, a contraction groove is provided on the side of the blade away from the contraction sleeve, one end of the contraction groove is rotatably connected to a swing plate, an electric push rod is fixedly installed inside the contraction groove, a connecting block is fixedly installed on the movable end of the electric push rod, one side of the connecting block is rotatably connected to a push plate, and the other end of the push plate is rotatably connected to the middle part of the swing plate.

[0008] Optionally, the two electric push rods are symmetrically arranged on the upper and lower sides inside the contraction groove, and the upper and lower ends of the push plate are rotatably connected to the opposite surfaces of the two connecting blocks respectively. The side of the swing plate located outside the contraction groove is flush with the side of the blade.

[0009] Optionally, a circular fixing plate is fixedly installed inside the connecting seat, and the bottom of the driving motor is fixedly installed to the top of the fixing plate.

[0010] Optionally, the bidirectional lead screw is coaxially arranged with the shrinking sleeve, the diameter of the connecting seat is smaller than the diameter of the shrinking sleeve, and the connecting seat is coaxially arranged with the shrinking sleeve.

[0011] Optionally, the number of the telescopic slots is the same as the number of the blades, and the width of the telescopic slot is the same as the wide end of the connecting strut.

[0012] Optionally, the two connecting rods rotatably connected by the two threaded sleeves through the rotating seat are symmetrically arranged at both ends of the bidirectional screw, and the distance between the two connecting rods and the rotating connection of the blade is greater than one-quarter of the length of the blade.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The fan blade for wind power generation is provided with a bidirectional screw. When in use, the driving motor is reversed, so that the two threaded sleeves approach each other, and the connecting strut supports the blade. When the wind force is strong, the driving motor is started to rotate the bidirectional screw, and the two threaded sleeves move away from each other, so that the connecting strut shrinks toward the inside of the shrinking sleeve, and the blade is pulled to the outside of the shrinking sleeve and pressed against the outer peripheral surface of the shrinking sleeve, so that the volume of the entire wind power generation device is reduced, the windward area is reduced, and the force on the blade is greatly reduced, thereby reducing the risk of blade damage and the overall overturning of the wind power device.

[0015] 2. The fan blade for wind power generation is provided with a swing plate, and an electric push rod pushes the connecting block to slide at the bottom of the contraction groove, so that the connecting block pushes the pushing plate to deflect, and then the swing plate is deflected, so that the windward surface of the outer blade can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a fan blade for wind power generation according to the utility model;

[0017] Figure 2 This is a structural schematic diagram of a shrink sleeve for a wind power generation blade according to the utility model;

[0018] Figure 3 This is a schematic structural diagram of a bidirectional lead screw for a wind power generation fan blade according to the present invention;

[0019] Figure 4 This is a schematic structural diagram of a contraction slot of a fan blade for wind power generation according to the utility model;

[0020] Figure 5 This is a schematic structural diagram of a swing plate of a fan blade for wind power generation according to the present invention.

[0021] In the figure: 1. Connecting seat; 2. Contraction sleeve; 3. Telescopic slot; 4. Bidirectional screw; 5. Driving motor; 6. Fixed plate; 7. Threaded sleeve; 8. Rotating seat; 9. Connecting support rod; 10. Blade; 11. Contraction slot; 12. Electric push rod; 13. Connecting block; 14. Push plate; 15. Swing plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 5 The utility model provides a fan blade for wind power generation, including a connecting seat 1, the top of the connecting seat 1 is integrally connected with a shrinking sleeve 2, a driving motor 5 is fixedly installed inside the connecting seat 1, and a telescopic groove 3 is opened on the outer circumference of the shrinking sleeve 2. The inside of the shrinking sleeve 2 is rotatably connected with a bidirectional screw 4, and the bottom of the bidirectional screw 4 is fixedly installed with the output end of the driving motor 5. The two ends of the bidirectional screw 4 are threadedly connected with a threaded sleeve 7, and the outer circumference of the threaded sleeve 7 is integrally provided with a rotating seat 8. The end of the rotating seat 8 is rotatably connected to a connecting strut 9, and the connecting strut 9 is slidably connected to the inside of the telescopic groove 3. The other end of the connecting strut 9 is rotatably connected The blades 10 are connected, and a bidirectional screw 4 is provided. When in use, the driving motor 5 is reversed, so that the two threaded sleeves 7 approach each other, and the connecting strut 9 supports the blades 10. When the wind is strong, the driving motor 5 is started to rotate the bidirectional screw 4, so that the two threaded sleeves 7 move away from each other, and the connecting strut 9 shrinks toward the inside of the shrinking sleeve 2, and then the blades 10 are pulled to the outside of the shrinking sleeve 2 and pressed against the outer peripheral surface of the shrinking sleeve 2, so that the volume of the entire wind power generation device is reduced, the windward area is reduced, and the force on the blades 10 is greatly reduced, thereby reducing the risk of damage to the blades 10 and the overall overturning of the wind power device.

[0024] A contraction groove 11 is provided on the side of the blade 10 away from the contraction sleeve 2, and one end of the interior of the contraction groove 11 is rotatably connected to a swing plate 15. An electric push rod 12 is fixedly installed inside the contraction groove 11, and a connecting block 13 is fixedly installed on the movable end of the electric push rod 12. One side of the connecting block 13 is rotatably connected to a push plate 14, and the other end of the push plate 14 is rotatably connected to the middle part of the swing plate 15. The two electric push rods 12 are symmetrically arranged on the upper and lower sides of the interior of the contraction groove 11, and the upper and lower ends of the push plate 14 are rotatably connected to the opposite surfaces of the two connecting blocks 13 respectively. The side of the swing plate 15 located outside the contraction groove 11 is flush with the side of the blade 10. A circular fixed plate 6 is fixedly installed inside the connecting seat 1, and the bottom of the drive motor 5 is fixedly installed to the top of the fixed plate 6. The bidirectional screw 4 is coaxially arranged with the shrinking sleeve 2, the diameter of the connecting seat 1 is smaller than the diameter of the shrinking sleeve 2, the connecting seat 1 is coaxially arranged with the shrinking sleeve 2, the number of telescopic slots 3 is the same as the number of blades 10, the width of the telescopic slot 3 is the same as the wide end of the connecting strut 9, and the two connecting struts 9 connected by the two threaded sleeves 7 through the rotating seat 8 are symmetrically arranged at both ends of the bidirectional screw 4. The distance between the two connecting struts 9 and the blades 10 is greater than one-quarter of the length of the blade 10. By setting a swing plate 15, the electric push rod 12 pushes the connecting block 13 to slide at the bottom of the shrinking slot 11, so that the connecting block 13 pushes the push plate 14 to deflect, and then the swing plate 15 is deflected, so that the windward surface of the outside of the blade 10 can be adjusted.

[0025] Working principle:

[0026] When in use, the driving motor 5 is reversed, so that the two threaded sleeves 7 move closer to each other, so that the connecting strut 9 supports the blade 10, and the electric push rod 12 pushes the connecting block 13 to slide at the bottom of the contraction groove 11, so that the connecting block 13 pushes the push plate 14 to deflect, and then the swing plate 15 is deflected, so that the windward surface of the outside of the blade 10 can be adjusted. When the wind is strong, the driving motor 5 is started to rotate the bidirectional screw 4, so that the two threaded sleeves 7 move away from each other, and the connecting strut 9 shrinks toward the inside of the contraction sleeve 2, and then the blade 10 is pulled to the outside of the contraction sleeve 2 and pressed against the outer peripheral surface of the contraction sleeve 2, so that the volume of the entire wind power generation device is reduced, the windward area is reduced, and the force on the blade 10 is greatly reduced, thereby reducing the risk of damage to the blade 10 and the overall overturning of the wind power device.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan blade for wind power generation, comprising a connecting seat (1), characterized in that: The top of the connecting seat (1) is integrally connected with a shrinking sleeve (2), a driving motor (5) is fixedly installed inside the connecting seat (1), a telescopic slot (3) is provided on the outer circumference of the shrinking sleeve (2), a bidirectional screw (4) is rotatably connected inside the shrinking sleeve (2), the bottom of the bidirectional screw (4) is fixedly installed with the output end of the driving motor (5), both ends of the bidirectional screw (4) are threadedly connected with a threaded sleeve (7), the outer circumference of the threaded sleeve (7) is integrally provided with a rotating seat (8), the end of the rotating seat (8) is rotatably connected with a connecting rod (9), the connecting rod (9) is slidably connected to the inside of the telescopic slot (3), and the other end of the connecting rod (9) is rotatably connected with a blade (10).

2. A fan blade for wind power generation according to claim 1, characterized in that: A contraction groove (11) is provided on a side of the blade (10) away from the contraction sleeve (2); one end of the interior of the contraction groove (11) is rotatably connected to a swing plate (15); an electric push rod (12) is fixedly installed inside the contraction groove (11); a connecting block (13) is fixedly installed at the movable end of the electric push rod (12); one side of the connecting block (13) is rotatably connected to a push plate (14); the other end of the push plate (14) is rotatably connected to the middle of the swing plate (15).

3. A fan blade for wind power generation according to claim 2, characterized in that: The two electric push rods (12) are symmetrically arranged on the upper and lower sides of the contraction groove (11), and the upper and lower ends of the push plate (14) are rotatably connected to the opposite surfaces of the two connecting blocks (13). The side of the swing plate (15) located outside the contraction groove (11) is flush with the side of the blade (10).

4. The fan blade for wind power generation according to claim 1, characterized in that: A circular fixing plate (6) is fixedly installed inside the connecting seat (1), and the bottom of the driving motor (5) is fixedly installed on the top of the fixing plate (6).

5. The fan blade for wind power generation according to claim 1, characterized in that: The bidirectional screw (4) is coaxially arranged with the shrinking sleeve (2), the diameter of the connecting seat (1) is smaller than the diameter of the shrinking sleeve (2), and the connecting seat (1) is coaxially arranged with the shrinking sleeve (2).

6. The fan blade for wind power generation according to claim 1, characterized in that: The number of the telescopic slots (3) is the same as the number of the blades (10), and the width of the telescopic slots (3) is the same as the wide end of the connecting support rod (9).

7. The wind power generation fan blade according to claim 1, characterized in that: The two connecting rods (9) connected by the two threaded sleeves (7) through the rotating seat (8) are symmetrically arranged at both ends of the bidirectional screw (4), and the distance between the two connecting rods (9) and the blade (10) is greater than one quarter of the length of the blade (10).

Images