Improved flat plate hub of horizontal-axis wind turbine

Abstract

The utility model discloses an improved flat plate hub of a horizontal-axis wind turbine, which comprises an integrally formed hub disc, an integrally formed main shaft connecting end is arranged at the center of the hub disc, three continuously fluctuating inclined planes are arranged on the front surface of the hub disc, and mounting threaded holes are uniformly distributed on the hub disc. The hub disc formed through the integral forming process is high in overall rigidity and better in stability, the hub disc is connected and installed with a main shaft of the wind driven generator through the main shaft connecting end, and through the aerodynamic design that the three continuously-fluctuating inclined faces on the front face are combined with the blades, the wind driven generator is more stable. Therefore, the device has the advantages that the device is integrally formed by adopting a high-strength aluminum alloy die-casting process, traditional welding manual manufacturing is replaced, meanwhile, the surface of the hub mounting blade adopts an inclination angle design, the aerodynamics design of the blade is combined, it is ensured that the wind driven generator blade can better absorb wind energy, and the wind energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of flat hubs of wind turbines, and more specifically, to an improved flat hub of a horizontal-axis wind turbine. Background Art

[0002] The hub is an important component of a wind turbine and is a key component connecting the wind blades and the main body of the wind turbine.

[0003] During mass production, it is impossible to ensure the angle of the hub plane, resulting in poor static and dynamic balance of the wind turbine blades due to angle errors after installing the wind blades. At the same time, iron hubs are extremely prone to rust outdoors, and a large amount of manpower and material resources are required for later maintenance. Summary of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide an improved flat hub of a horizontal-axis wind turbine.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] An improved flat hub of a horizontal-axis wind turbine, including an integrally formed hub disc. A spindle connection end is integrally formed at the center of the hub disc. Three continuously undulating inclined surfaces are provided on the front surface of the hub disc, and uniformly distributed mounting threaded holes are provided on the hub disc.

[0007] As a further description of the above technical solution: Three Y-shaped reinforcing ribs are provided on the back surface of the hub disc.

[0008] As a further description of the above technical solution: The hub disc is an integrally formed aluminum alloy die-casting disc.

[0009] As a further description of the above technical solution: A docking hole is provided inside the spindle connection end, and a keyway is provided on the side of the docking hole.

[0010] As a further description of the above technical solution: The Y-shaped reinforcing ribs are integrally die-cast with the entire hub disc.

[0011] As a further description of the above technical solution: Straight reinforcing ribs staggered with the three Y-shaped reinforcing ribs are provided on the back surface of the hub disc.

[0012] Compared with the prior art, the advantages of the utility model are as follows:

[0013] The hub disk formed by the integral molding process of this solution has high overall stiffness and better stability. It is connected and installed to the main shaft of the wind turbine through the main shaft connection end. Through the three continuously undulating inclined surfaces on the front combined with the aerodynamic design of the blades, it ensures that the wind turbine blades can better absorb wind energy and improve the wind energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 is a front view structural schematic diagram of the present invention;

[0016] Figure 3 is a rear view structural schematic diagram of the present invention;

[0017] Figure 4 is a three-dimensional rear view structural schematic diagram of the present invention;

[0018] Figure 5 is a side view structural schematic diagram of the present invention.

[0019] Description of the reference numerals in the drawings:

[0020] 1. Hub disk; 2. Main shaft connection end; 21. Docking hole; 22. Keyway; 3. Inclined surface; 4. Mounting threaded hole; 5. Y-shaped reinforcing rib; 6. Straight reinforcing rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention;

[0022] Please refer to Figures 1 to 5 , in the present invention, an improved horizontal axis wind turbine flat hub includes an integrally formed hub disk 1. A main shaft connection end 2 integrally formed is provided at the center of the hub disk 1. Three continuously undulating inclined surfaces 3 are provided on the front of the hub disk 1. Uniformly distributed mounting threaded holes 4 are provided on the hub disk 1.

[0023] In this utility model, the hub disc 1 formed by an integral molding process has high overall rigidity and better stability. It is connected and installed to the main shaft of the wind turbine through the main shaft connection end 2. Through the three continuously undulating inclined planes 3 on the front surface and the aerodynamic design of the blades, it ensures that the wind turbine blades can better absorb wind energy, improve the wind energy utilization rate, and is conveniently connected and installed to the wind turbine base through the installation threaded holes 4. Thus, the device has the advantages of being integrally formed by a high-strength aluminum alloy die-casting process, replacing the traditional welding and manual production. At the same time, the surface of the hub for installing the blades adopts an inclined angle design, combined with the aerodynamic design of the blades, to ensure that the wind turbine blades can better absorb wind energy and improve the wind energy utilization rate. It solves the problems in the prior art that in mass production, the angle of the hub plane cannot be guaranteed, resulting in poor static and dynamic balance of the wind turbine blades due to angle errors after installing the wind blades. At the same time, the iron hub is extremely prone to rust outdoors, and a large amount of manpower and material resources are required for later maintenance.

[0024] Please refer to Figure 3 and Figure 4 , in which: there are three Y-shaped reinforcing ribs 5 provided on the back surface of the hub disc 1.

[0025] In this utility model, the strength and stability of the entire hub disc 1 are improved through the three Y-shaped reinforcing ribs 5.

[0026] Please refer to Figure 1 , in which: the hub disc 1 is an integrally formed aluminum alloy die-casting disc.

[0027] In this utility model, by using the integrally formed aluminum alloy die-casting disc as the main body of the hub disc 1, the strength is improved, the overall mass is reduced, and the service life is increased.

[0028] Please refer to Figure 1 , in which: there is a docking hole 21 provided inside the main shaft connection end 2, and a keyway 22 is provided on the side of the docking hole 21.

[0029] In this utility model, it is convenient to dock with the main shaft through the docking hole 21, and the docking installation is more accurate in cooperation with the keyway 22.

[0030] Please refer to Figure 1 , in which: the Y-shaped reinforcing ribs 5 are integrally die-cast with the entire hub disc 1.

[0031] In this utility model, the Y-shaped reinforcing ribs 5 are integrally die-cast with the entire hub disc 1, and the overall die-casting molding makes the device have higher strength and longer service life.

[0032] Please refer to Figure 3 and Figure 4 , in which: there are straight reinforcing ribs 6 arranged alternately with the three Y-shaped reinforcing ribs 5 provided on the back surface of the hub disc 1.

[0033] In the present utility model, through the straight reinforcing ribs 6 arranged in a staggered manner by three Y-shaped reinforcing ribs 5, while reducing the overall mass, the use strength and stability are ensured.

[0034] The above is only the preferred specific implementation manner of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its improved concept of the present utility model, making equivalent replacements or changes, shall be covered by the protection scope of the present utility model.

Claims

1. An improved flat hub for a horizontal axis wind turbine, comprising an integrally formed hub disk (1), characterized in that: An integrally formed main shaft connection end (2) is arranged at the center of the wheel hub (1), three continuously undulating inclined surfaces (3) are arranged on the front of the wheel hub (1), and evenly distributed mounting threaded holes (4) are provided on the wheel hub (1).

2. The improved flat hub of horizontal axis wind turbine according to claim 1, characterized in that: Three Y-shaped reinforcing ribs (5) are arranged on the back side of the hub disc (1).

3. The improved flat hub of horizontal axis wind turbine according to claim 1, characterized in that: The wheel hub disc (1) is an integrally formed aluminum alloy die-cast disc.

4. The improved flat hub for horizontal axis wind turbine according to claim 1, characterized in that: A docking hole (21) is provided inside the main shaft connection end (2), and a keyway (22) is provided on the side of the docking hole (21).

5. The improved flat hub of horizontal axis wind turbine according to claim 2, characterized in that: The Y-shaped reinforcing rib (5) is integrally die-cast with the entire hub disc (1).

6. The improved flat hub of horizontal axis wind turbine according to claim 2, characterized in that: The back side of the hub disc (1) is provided with straight reinforcing ribs (6) arranged in an alternating manner with three Y-shaped reinforcing ribs (5).

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