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Instrumented shaft for condition monitoring

A technology for measuring the surface and the axial direction, which is used in the field of shafts supporting bearings, wind turbines, and can solve problems such as vibration that is difficult to detect

Active Publication Date: 2018-08-28
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a result, the location of the sensor is relatively far away ( / further) from the bearings that support the planet gear shafts, which means that vibrations associated with bearing defects are more difficult to detect
[0005] room for improvement

Method used

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  • Instrumented shaft for condition monitoring
  • Instrumented shaft for condition monitoring
  • Instrumented shaft for condition monitoring

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Figure 1A A perspective view is shown of a first stage of a planetary gearbox 100 suitable for a wind turbine drive train connecting the main rotor of the wind turbine with a generator. exist Figure 1B A cutaway perspective view of the gearbox is shown in , where part of the housing ( / housing) for the second stage can also be seen. In the example shown, the gearbox 100 has: a fixed (of) ring gear (ring gear) 105, which is mounted on the seat 102; a sun gear (not shown); and three planetary gears 107, which surround the sun gear Arranged so that the gear teeth of each planet gear 107 are in meshing engagement with the gear teeth of the sun gear and ring gear 105 .

[0022] Each planetary gear 107 is rotatably supported on a corresponding planetary gear shaft 110 via a bearing arrangement (not shown). The planetary gear shaft(s) 110 are fixed to a planetary (gear) carrier (planet carrier) 120, in this example the planetary carrier 120 is rotatably relative to the base...

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PUM

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Abstract

The invention relates to a flanged shaft (110), having a shaft part (111) including a bearing seat (113) for mounting an inner ring of a bearing arrangement and a flange part (112) at a first side ofthe shaft. The flange part (112) has an axially inner surface (114) for axially retaining the inner ring. The flanged shaft is instrumented with one or more sensor units (130). Each unit has a measuring surface (132) formed by an axially inner surface of at least one contact plate on which one or more sensors are provided for monitoring one or more operating parameters of the bearing arrangement.According to the invention, each of the one or more sensor units (130) is arranged in a corresponding recess that extends through the flange part (112) such that the measuring surface (132) lies flushwith or protrudes somewhat beyond the axially inner surface (114) of the flange part (112).

Description

technical field [0001] The present invention relates generally to the field of condition monitoring of rotating components, and more particularly to shafts for supporting bearings which are instrumented with one or more condition monitoring sensors. The invention also relates to a gearbox comprising such an instrumented shaft and to a wind turbine comprising such a gearbox. Background technique [0002] Condition monitoring is an important tool ( / means) for detecting faults and adverse operating conditions of rotating machinery components such as bearings, thereby enabling preventive maintenance or repairs to be performed before any major ( / critical) faults occur. This is especially important for remote installations like wind turbines, which operate without supervision and where critical failures are extremely expensive to repair. [0003] An example of condition monitoring of an epicyclic gearbox ( / planetary gearbox) in a wind turbine is disclosed in US patent 8393993. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28F16C3/02
CPCF16C3/02F16H1/28F05B2240/60F16H1/2863F03D15/00F03D17/00F05B2260/40311F16H57/0031F16H57/01F16H2057/012Y02E10/72F05B2260/80F05B2270/325F05B2270/333F05B2270/334F05B2270/808
Inventor 安德鲁·坎贝尔
Owner AB SKF