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Damping of planetary gears with flex-pins for wind turbines

A technology of gears and planetary carriers, applied in the field of damping of flexible pins, can solve the problems of impracticality and frequency reduction, and achieve the effects of reducing dynamic load, reducing weight and cost, and reducing the reliability of miniaturized machines

Inactive Publication Date: 2012-05-16
CLIPPER WINDPOWER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In complex wind turbine gearboxes with multiple natural frequencies, these existing options become less practical, especially if many frequencies are reduced due to introducing flexibility (specifically, from flexpins) into the system

Method used

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  • Damping of planetary gears with flex-pins for wind turbines
  • Damping of planetary gears with flex-pins for wind turbines
  • Damping of planetary gears with flex-pins for wind turbines

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Experimental program
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Embodiment Construction

[0035] Wind turbines are rotating machines that convert wind energy into electricity. The rotor blades are connected to a gear train or gearbox that changes the slow rotation of the blades to a faster rotation more suitable for driving a generator. The gearbox uses an epicyclic transmission (planetary transmission) to gradually accelerate the rotation of the rotor blades to drive several generators. figure 1 The basic components of the system are shown in .

[0036] At once figure 1 as well as Figure 2A and 2BAs far as the wind turbine is concerned, the wind turbine is mounted on top of the tower 1. The aerodynamic rotor blades 4 , 5 , 6 rotate a rotor hub 8 which rotates a main shaft 10 . The main shaft 10 drives a gear train drive train 11 comprising epicyclic gear units. The epicyclic gear unit comprises a planet carrier 9 provided with a plurality of elastic or flexible pins 13 mounted to and supported by the planet carrier 9 at one end. A tubular sleeve 19 is moun...

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PUM

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Abstract

A gear assembly includes a flexible pin (13) mounted to and supported by a planet carrier (9) at one end. A tubular sleeve (19) extends coaxially about the flexible pin (13) and provides a deflection space (7) between said tubular sleeve (19) and said flexible pin (13). Said flexible pin (13) moves, flexes or deflects under operational loads. A damping element is contained at least partially within said deflection space (7) and surrounds at least partially said flexible pin (13).

Description

technical field [0001] The present invention relates generally to gear systems, and more particularly, to flexpin damping in planetary gear systems. Background technique [0002] A particular form of cantilevered support for the gear element includes a sleeve element coaxial with a mounting pin deflected in such a way that the outside of the sleeve remains parallel to the system axis. This is often referred to as a "flex pin". In addition to parallel deflection, these devices have spring rates designed to assist in equalizing loads in multi-gear, power-split systems, including planetary systems. The invention disclosed in US Patent 3,303,713 to R. J. Hicks has important application in heavy duty transmissions especially when power density is increased through the use of planetary gears in an epicyclic configuration. [0003] The planet gears have pins that are pressed into only one wall of the planet gear carrier. At the free end of the pin, an annular sleeve and bearing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28F16H57/08
CPCF16H1/48F16H1/2836Y02E10/722F05B2260/96Y02E10/72F03D11/02F05B2260/40311F03D15/00F03D15/10F03D80/70
Inventor 安东尼·肖伯泰勒·梅耶埃德文·C·哈尔贝克阿米尔·S·米哈伊尔
Owner CLIPPER WINDPOWER INC
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