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Speed reducer for use in yaw drive apparatus for wind power generation apparatus, and yaw drive method and apparatus for wind power generation apparatus using the speed reducer

A technology for a wind power generation device and a driving device, which is applied to wind turbines, wind turbine control, and wind energy power generation, etc., can solve the problems of the overall length of the reducer, increase in weight, and poor maintenance, and achieve high efficiency, shaft speed, etc. To the effect of short length

Inactive Publication Date: 2006-09-20
NABLESCO CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0009] However, the former reducer connected with a 5-stage planetary reduction mechanism has a longer overall length and increased weight, so maintainability is poor.
In addition, when operating at a low temperature below -20°C, due to the 5-stage deceleration, the stirring resistance of the lubricating oil is large, and a motor with a large output power is required to compensate for the loss of the stirring resistance.

Method used

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  • Speed reducer for use in yaw drive apparatus for wind power generation apparatus, and yaw drive method and apparatus for wind power generation apparatus using the speed reducer
  • Speed reducer for use in yaw drive apparatus for wind power generation apparatus, and yaw drive method and apparatus for wind power generation apparatus using the speed reducer
  • Speed reducer for use in yaw drive apparatus for wind power generation apparatus, and yaw drive method and apparatus for wind power generation apparatus using the speed reducer

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Embodiment Construction

[0053] The following is based on figure 1 and figure 2 A first embodiment of the present invention will be described. figure 1 is a longitudinal sectional view, showing along the figure 2 The A-A direction cross-sectional diagram, figure 2 for figure 1 B-B line sectional view.

[0054] 100 is the yaw driving device of the wind power generation device. 200 is a speed reducer used in the yaw driving device 100 . The speed reducer 200 is composed of a first-stage reduction unit 10 , a second-stage reduction unit 20 connected to the first-stage reduction unit 10 , and a third-stage reduction unit 30 connected to the second-stage reduction unit 20 .

[0055] The first-stage reduction part 10 is composed of a planetary reduction mechanism with the following components: an input sun gear 3 fixedly connected to the output shaft 2 of the motor 1 as an input part; A plurality of (three) planetary gears 4; an internal tooth gear body 6 having internal teeth 5 meshing with these...

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Abstract

A speed reducer and a yaw drive apparatus for a wind power generation apparatus, where the speed reducer has high efficiency and a short axial length, and suitable for the yaw drive apparatus. The speed reducer has three stages for speed reduction. The total reduction gear ratio of a first stage speed reducing portion (10) and a second stage speed reducing portion (20) is set at 1 / 6 to 1 / 60, and a third stage speed reducing portion (30) is constructed from an eccentric oscillating-type speed reducing mechanism having an internal-geared gear body (32), external gears (34), crankshafts (35), and a carrier (37). The reduction gear ratio of the eccentric oscillating-type speed reducing mechanism is set at 1 / 50 to 1 / 140, and the total reduction gear ratio of the speed reducer is set at 1 / 1000 to 1 / 3000. A yaw drive method and the yaw drive apparatus can reduce noise, and the yaw drive apparatus is inexpensive and reduced in size.

Description

technical field [0001] The present invention relates to a speed reducer used in a yaw drive device for rotating a wind power generation unit of a wind power generator in an approximately horizontal plane, and a yaw drive method and device using the speed reducer. Background technique [0002] The yaw driving device of the wind power generation device is a device that rotates the wind power generation unit relative to the tower according to the wind direction so that the blades of the wind power generation device receive wind from the front, and is a driving device that rotates the ring gear installed on the tower. [0003] The yaw driving device generally combines a general-purpose induction motor (used at a rotational speed of 1000 to 1800 rpm) and a plurality of reduction mechanisms (total reduction ratio of 1 / 1000 to 1 / 3000). [0004] In order to obtain a high reduction ratio, the speed reducer used in the yawing drive unit of the conventional wind turbine generator is of...

Claims

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Application Information

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IPC IPC(8): F03D7/04F03D9/00F16H1/32F16H1/36F16H57/12
CPCY02E10/723Y02E10/722F16H1/32Y02E10/72
Inventor 野原修横山胜彦田边定幸
Owner NABLESCO CORP
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