A wind turbine wind wheel variable pre-cone angle device and using method
A technology of wind turbines and pre-cone angles, which is applied to wind turbines, wind power generation, and wind turbines in the same direction as the wind. It can solve problems such as reducing power generation, tower collisions, and blade deformation, and achieve reduced maintenance costs. The effect of increasing the service life
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Embodiment 1
[0037] see Figure 1 to Figure 7 , the present invention provides a variable pre-cone angle device for a wind turbine of a wind turbine, comprising a tower 1, a nacelle 2 is installed on the top of the tower 1, a main shaft 3 is installed on the nacelle 2, and a connecting seat 9 is connected to the other end of the main shaft 3 The hub 4 is installed on the outside of the connecting seat 9, the hub 4 is connected with the blade root connecting section 5, the blade root connecting section 5 is connected with the blade root 7, and the blade root 7 is connected with the blade 6.
[0038] The connecting base 9 is arranged in a Y shape and includes three protruding posts 91 ; the three protruding posts 91 are evenly arranged, and the included angle between them is 120°. The top of the boss 91 is provided with a gear ring 10 , the inner wall of the gear ring 10 is provided with a fixing groove 21 , the pitch bearing 11 is installed in the gear ring 10 through the fixing groove 21 ,...
Embodiment 2
[0046] The present invention also provides a method for using the variable pre-cone angle device of the wind wheel of the wind turbine, comprising the following steps:
[0047] Step 1: Provide the required electrical energy to the internal electrical appliances through the power supply after the power generation is completed. After the installation of each equipment is completed, the blades 6 are rotated by the blowing of wind energy, and the rotation of the blades 6 makes the hub 4 and the main shaft 3 rotate. , so that the main shaft 3 converts the kinetic energy transmission into electrical energy for use.
[0048] Step 2: Adjust the pre-cone angle of the blade 6 according to different conditions. When in use, according to the different wind directions, start the motor 18 to drive the toothed roller 19 to rotate. The toothed roller 19 cooperates with the gear ring 10 and is dialed by the fixed plate 16 The moving blade root 7 makes the blade 6 rotate on the pitch bearing 11...
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