Blade tilt angle variable horizontal-shaft blade type wind-driven generator

Abstract

A blade tilt angle variable horizontal-shaft blade type wind-driven generator is characterized in that blades are fixed onto a blade shaft perpendicular to a horizontal rotary shaft, the axis of the blade shaft is parallel to the length direction of each blade and deflects to the edge of one side of each blade, the horizontal rotary shaft is in perpendicular shaft-bevel gear meshed connection with the blade shaft, and the connection includes that the front wall and the rear wall of a gearbox are provided with corresponding central holes, the gearbox is rotatably supported at the front end of the horizontal rotary shaft through the central holes, a central bevel gear is arranged in the horizontal rotary shaft in the gearbox, the end of the blade shaft is rotatably supported on the side wall of the gearbox, and side bevel gears arranged at the blade shaft ends in the gearbox are perpendicularly meshed with the central bevel gear. A blade swing limiting mechanism is arranged and includes that a projection is arranged on the horizontal rotary shaft or the back of the central bevel gear, and limiting blocks extending to two sides of the projection are arranged on the gearbox. By the aid of the blade tilt angle variable horizontal-shaft blade type wind-driven generator, tilt angles of the blades can be automatically varied along with swing of the blades blew by windward wind or leeward wind, and a windmill is subjected to torque in the same directions whether the wind blows the blades from the front side or the back side.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a horizontal axis blade type wind power generator with variable blade inclination angle. Background technique [0002] Conventional wind turbines with blade-type wind rotors as wind energy receiving devices can be divided into two types: horizontal axis and vertical axis structures. The wind wheel is mainly composed of a rotating shaft and a blade group. Most of the blades of the existing horizontal rotating shaft wind wheel are directly fixed on the horizontal rotating shaft. The blades are not in the same plane, but slightly inclined to the vertical plane of the horizontal rotating shaft. There is a fixed The angle of inclination, so that the wind turbine can rotate against the wind. The direction of the inclination determines the rotation direction of the wind turbine when the wind blows from the front of the wind turbine: if the inclination angle of the horizontal blade on the l...

AI Technical Summary

Problems solved by technology

The disadvantage of this fixed-inclination blade is that when the wind blows from the rear, the torque on the wind rotor is opposite to the direction in which the wind turbine rotates against the wind: at the same inclination, if the wind blows from the back to the front, the wind turbine is counterclockwise The wind turbine rotates clockwise only when the inclination angle is also reversed.

Images