CN201747516U - Centrifugal variable-propeller hub of wind driven generator - Google Patents

Abstract

The centrifugal pitch hub for wind turbines designed in this utility model mainly includes a hub body and a blade connecting shaft. A motor shaft is located at the center of the hub body, and the blade connecting shaft is mounted on the hub body. The centerline of the blade connecting shaft is tangent to the rotational arc of the hub body by a certain radius. One end of the blade connecting shaft is fixed to the hub body via a deep groove ball bearing and a round nut, while the other end is used to fix the blades. A centrifugal hammer is fixed to the back of the blade fixing end of the blade connecting shaft. During normal operation, the centrifugal hammer adjusts the blades to the optimal state relative to the windward surface, resulting in a significant pitch effect and good stability. A hub cover is also provided on the hub body. This centrifugal pitch hub for wind turbines has a reasonable main structure design, good stability, and a significant pitch effect. By controlling the windward angle of the blades through the centrifugal force generated by the centrifugal hammer when the wind turbine rotates, it maximizes the use of wind power, enabling small and medium-sized variable pitch wind turbines to achieve pitch control.

Description

Wind turbine centrifugal pitch hub

technical field

The utility model relates to a wind power generator, in particular to a generator with a centrifugal variable pitch hub. the

Background technique

Among the existing wind turbines, the variable pitch technology has developed into an industry due to its stable output, strong wind resistance and high power generation efficiency, and the hub of the wind turbine is a key part of the variable pitch wind turbine mechanism. The structural design of many hubs is not very simple, and there are certain deficiencies in the pitch-changing function in the application, and there is no great effect of utilizing wind force.

Utility model content

The purpose of this utility model is to provide a centrifugal variable pitch hub of a wind power generator that is not only simple and reliable, but also automatically adjusts the pitch angle according to the size of the centrifugal force in order to solve the deficiencies of the above-mentioned technologies. the

In order to achieve the above-mentioned purpose, the wind turbine centrifugal variable pitch hub designed by the utility model mainly includes the hub body and the fan blade connecting shaft, the motor shaft is arranged in the center of the hub body, and the fan blade connecting shaft is uniformly distributed annularly on the hub body. The center line of the fan blade connecting shaft is tangent to the circle centered at the center of the hub body. One end of the fan blade connecting shaft is connected to the hub body through a deep groove ball bearing and a round nut, and can rotate freely, so that the centrifugal force and the direction of rotation are basically maintained. In the same direction, the effect of centrifugal force on the rotation is more obvious. The deep groove ball bearing is fixed by the gland. The other end of the connecting shaft of the fan blade is the fixed end of the fan blade. The centrifugal hammer is fixed on the back of the fixed end of the fan blade. The shape of the centrifugal hammer is "7", and one side of the "7" is fixed to the back of the fixed end of the fan blade by bolts. In normal operation, the centrifugal hammer adjusts the fan blade and the windward side to the best state, and the pitch effect is improved. Obviously, the stability is good, and at the same time, a hub cover is arranged on the hub body to protect the inner structure of the hub body. the

The centrifugal pitch variable hub of the wind power generator obtained by the utility model has a reasonable main structure design, good stability, obvious pitch variable effect, and the blades can rotate freely, so that the centrifugal force and the rotating direction are kept in the same direction, and the centrifugal force has an effect on the rotation. It is more obvious that when the wind turbine rotates itself, the centrifugal force generated by the centrifugal hammer controls the windward angle of the blades, making maximum use of the wind force, enabling the small and medium-sized variable pitch wind turbines to realize the pitch function. the

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a sectional view of the utility model;

Fig. 3 is the left view of the utility model;

Fig. 4 is the front view of the utility model. the

1. Hub body 2. Fan blade connecting shaft 3. Centrifugal hammer 4. Motor shaft (hub rotation center)

5. Deep groove ball bearing 6. Round nut 7. Hub cover 8. Fan blade fixed end 9. Gland

Detailed ways

Below by embodiment in conjunction with accompanying drawing, the utility model is further described. the

Example 1:

As shown in Figure 1, it mainly includes a hub body 1, a fan blade connecting shaft 2, a motor shaft 4 is arranged at the center of the hub body 1, and the fan blade connecting shaft 2 is uniformly distributed in a ring on the hub body 1, and the center of the fan blade connecting shaft 2 The line is tangent to the circle with the center of the hub body 1 as the center of the circle. One end of the fan blade connecting shaft 2 is connected to the hub body through a deep groove ball bearing 5 and a round nut 6, and can rotate freely, so that the centrifugal force and the direction of rotation are basically consistent. The direction of the centrifugal force on the rotation is more obvious, the deep groove ball bearing 5 is fixed by the gland 9, as shown in Figure 2, the other end of the fan blade connecting shaft 2 is the fan blade fixed end 8, at the fan blade fixed end The back of 8 fixes the centrifugal hammer 3, and the shape of the centrifugal hammer is "7", wherein one side of the "7" and the back of the fixed end 8 of the fan blade are fixed by bolts. In normal operation, the centrifugal hammer 3 uses The wind blades and the windward side are adjusted to the best state, the pitch effect is obvious, and the stability is good. At the same time, a hub cover 7 is arranged on the hub body 1, as shown in Fig. 3 and Fig. 4, to protect the inner structure of the hub body. the

Claims (3)

1. A centrifugal variable pitch hub of a wind-driven generator, which mainly includes a hub body (1), a blade connecting shaft (2), and a motor shaft (4) arranged at the center of the hub body (1), characterized in that the The fan blade connecting shaft (2) is uniformly distributed annularly on the hub body (1). The center line of the fan blade connecting shaft (2) is tangent to the circle centered on the center of the hub body (1). The fan blade connecting shaft (2) One end is connected to the hub body (1) through a deep groove ball bearing (5) and a round nut (6), the deep groove ball bearing (5) is fixed by the gland (9), and the fan blade connecting shaft (2) The other end is the fan blade fixed end (8), and the centrifugal hammer (3) is fixed on the back side of the fan blade fixed end (8). 2. The centrifugal pitch variable hub of a wind power generator according to claim 1, characterized in that the shape of the centrifugal hammer (3) is a "7" shape, wherein one side of the "7" shape is connected to the fixed end of the blade (8) The back is secured by bolts. 3. The wind turbine centrifugal pitch hub according to claim 1, characterized in that a hub cover (7) is arranged on the hub body (1).

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