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System and method for monitoring the condition of a gear assembly

A technology of gears and components used in machine gear/transmission testing, measuring devices, measuring vibration, etc.

Inactive Publication Date: 2010-09-01
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through experimental analysis, it is possible to determine the individual vibration frequencies corresponding to specific parts of the gear assembly

Method used

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  • System and method for monitoring the condition of a gear assembly
  • System and method for monitoring the condition of a gear assembly
  • System and method for monitoring the condition of a gear assembly

Examples

Experimental program
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Embodiment Construction

[0010] figure 1 Shown is part of a planetary gear assembly for connecting the rotating blades of a wind turbine to an electrical generator. Such as figure 1 As shown in , a plurality of blades 6 of a wind turbine are connected to a blade shaft 5 . The blade shaft 5 is mounted on the wind turbine via bearings 26,27.

[0011] At the other end of the assembly, the rotating shaft 17 is attached to a generator (not shown). The sun gear 10 is mounted on one end of a rotary shaft 17 . A plurality of planetary gears 9 are positioned between the sun gear 10 and the ring gear 11 . The ring gear 11 is fixed to the housing 24 of the gear assembly.

[0012] The planetary gears 9 are rotatably mounted on a planetary gear shaft 14 mounted on a front planetary gear plate 12 and a rear planetary gear plate 13 . Typically, the planet gears 9 are rotatably mounted on bearings 15 and 16 fixed to the planet gears 9 and the planet gear shafts 14 . This allows the planet gears 9 to rotate fre...

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Abstract

A system and method for monitoring the condition of a gear assembly analyzes a signal output by a vibration detector that is attached to the gear assembly. Each time that an amplitude of the signal output from the vibration detector exceeds a threshold value, the system assumes that a debris particle has passed between meshing parts of the gear assembly. The number of times that this occurs, and possibly the amplitude of the vibrations are analyzed to determine a condition of the gear assembly, and possibly a damage index. This system and method are particularly applicable to planetary gear arrangements where the vibration detector can be mounted on a fixed ring gear of the gear assembly, or a structure upon which the fixed ring gear is mounted.

Description

technical field [0001] The present invention relates to a method of sensing the condition of a gear assembly to predict when the gear assembly is close to failure. Background technique [0002] In most known methods of monitoring the condition of gear assemblies, one attempts to detect the vibrations generated by the gear assembly as the gears rotate and mesh with each other. Through experimental analysis, it is possible to determine the individual vibration frequencies corresponding to specific parts of the gear assembly. By detecting the magnitude of the vibration signal at these specific frequencies, it is often possible to determine whether individual elements of the gear assembly have begun to fail. Contents of the invention [0003] In one aspect, the invention can be embodied as a method of monitoring and reporting the condition of a gear assembly comprising the steps of: receiving a signal from a vibration detector attached to a portion of a gear assembly, and ana...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02G01H1/00
CPCG01M13/028G01H1/003G01H1/006
Inventor R·哈拉C·T·哈奇A·韦斯M·马罗夫M·卡尔布S·哈利
Owner GENERAL ELECTRIC CO
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