Deceleration device for wind power generating apparatus and deceleration device provided with output pinion

Abstract

The invention provides a deceleration device, which is advantaged by small size, low cost, and capability of effectively preventing damage or fault of a deceleration device or a motor even under the condition that a large wind power load is applied. The deceleration device (G1) is provided with an output pinion (24) engaged with a gear disposed at the main body side of a wind power generating apparatus, wherein, the deceleration device is provided with: a planet gear speed reducing mechanism (44) comprising an external gear (a planet gear) (76), an output flange (a gear rack) (82), and a plurality of internal pins (planetary pins) (80); and a limiting ring (88) limiting each end portion at the opposite side of the gear rack of the internal pins (80). A load opposite side cover body (housing) (48C) and the limiting ring (88) are oppositely disposed, minor spacing (Delta 1) is provided during assembly, if the load (L) transmitted exceeds a predetermined value (Lo), mutual contact is generated, and when a fatigue equivalent load is set to be (Le), and an extreme value is set to be (Lm), the predetermined value (Lo) is set to be in the range of Le<Lo<Lm.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2011-045534 filed on March 2, 2011. The entire content of the application is incorporated in this specification by reference. [0002] In particular, the present invention relates to a reduction gear used in wind power generation equipment and a reduction gear including an output pinion. Background technique [0003] Patent Document 1 discloses a reduction gear used for wind power generation equipment. As the control of wind power generation equipment, there are yaw control to control the direction (rotation) of the nacelle (generating room) in the horizontal plane with respect to the wind, or pitch control to control the direction (inclination) of the wind turbine blades with respect to the wind, etc., but both This can be achieved with reduction gears driven by motors or hydraulic cylinders. [0004] A reduction gear used in a wind power generation facility includes the redu...

AI Technical Summary

Problems solved by technology

[0008] However, even if it is equipped with the "restriction ring on the opposite side of the wheel carrier that restricts a plurality of planetary pins" structure as in this patent document 1, as a structure of wind power generation equipment targeted at nature, it still has insufficient strength. one side

[0009] For example, if the thickness of the inner pin is increased in order to increase the strength of the planetary pin, although a margin in strength can be obtained, the increase in the thickness of the inner pin will become the main reason for the increase in the overall size of the reduction gear. equipment set within will be a big disadvantage

In addition, it will also become a major cause of increased cost, increased weight, and increased power loss.

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