Windmill rotary vane turning device and wind-powered electricity generation device equipped with same

Abstract

In order to enable the rotary vanes of a windmill to rotate to any position by means of a simple and low-cost configuration, and to prevent malfunctions even when excessive torque variation from the rotary vanes of the windmill is applied during gusty winds, a turning device (35) is characterized by being equipped with: a brake disk (24), which serves as driven-side friction pulley provided so as to rotate integrally on an output shaft (21) of a speed-increasing gear; a driving-side friction pulley (36), which is provided so as to be capable of moving between an engaged position (36b) wherein the outer circumferential surface (24a) of the brake disk (24) is frictionally engaged, and a free position wherein the driving-side friction pulley is separated from the outer circumferential surface (24a) of the brake disk (24); a pulley compression mechanism (37), which moves the driving-side friction pulley (36) from the free position to the engaged position (36b) in response to the manpower of the operator, causing the driving-side friction pulley to frictionally engage the outer circumferential surface (24a) of the brake disk (24); and a pulley-driving means (an electric motor or the like) which rotationally drives the driving-side friction pulley (36). When excessive torque variation is applied, the friction engagement between the brake disk (24) and the driving-side friction pulley (36) slips, and damage is avoided.

Description

technical field [0001] The present invention relates to a steering device for a wind turbine rotor that rotates the rotor blade to a desired position when the wind speed is low, and a wind power generator including the steering device for the wind turbine rotor. Background technique [0002] A standard rotor blade-type wind power generator includes a wind turbine rotor blade in which a plurality of wind turbine blades are attached to a rotor head serving as a rotation center. The rotor blade of the windmill is pivotally supported by a nacelle, and the nacelle is supported so as to be able to swivel at the upper end of the tower, and a speed increaser and a generator are provided inside the nacelle. When the rotor blades of the windmill are blown by the wind and rotate, the rotation is increased by the speed increaser and transmitted to the generator to generate electricity. For an upwind type wind power generation device, the nacelle is driven and controlled so that the rot...

AI Technical Summary

Problems solved by technology

Therefore, the steering device becomes an expensive piece of equipment that is used infrequently in relation to the operating time of the wind power generation device, and this becomes a factor that increases the manufacturing cost of the wind power generation device.

[0012] In addition, in the steering device of Patent Document 1, the driving force of the electric motor is transmitted to the rotating shaft of the speed increaser through a relatively expensive gear mechanism, so this also increases the manufacturing cost.

Furthermore, when the gear mechanism is used to transmit the power of the electric motor to the side of the windmill rotor, when the wind speed is estimated to be low and the windmill rotor is turned over, a strong wind is applied from the windmill rotor when a sudden storm (gale wind) blows. In the case of a large torque fluctuation, the torque fluctuation is transmitted to the electric motor side as it is, which may damage the driving force transmission elements such as the electric motor and gear mechanism

Images