Checking tool for bearing raceways of main shafts

Abstract

The invention discloses a checking tool for bearing raceways of main shafts. The tool can be used for directly conducting equivalence treatment on time sequence load and LDD load spectrums, each working condition is equivalent to one group of loads, the equivalent loads are loads at the centers of hubs and can be further transmitted to the centers of bearings through a balance relation, and the tool is divided into two modules including the checking module for double-row spherical roller bearing raceways and a checking module for double-row tapered roller bearing raceways according to a bearing structure form; firstly, the static strength safety factors and contact stress of the bearing raceways are solved according to a method provided in ISO76-2006 standards, secondly, the basic rating service life and corrected rating service life of the bearing raceways are solved according to ISO281-2007 standards, and finally, the reference service life of the bearings is solved according to ISO16281-2008 standards. By means of the tool, the starting design cycle of a complete machine can be very effectively shortened, the tool better serves to the design, certification and evaluation of a wind-driven generator, the reliability of the design of a wind-driven generator set is improved, and the cost is saved.

Description

technical field [0001] The invention relates to the field of strength analysis of components of a wind power generating set, in particular to a tool for checking the raceway of a main shaft bearing. Background technique [0002] It is known in the industry that the main shaft bearing is an important part of the main transmission chain of the wind turbine, and its performance reliability not only affects its own maintenance cost, but also determines the reliability of the transmission chain. Spindle bearings mainly include double-row spherical roller bearings, toroidal roller bearings, double-row tapered roller bearings, and cylindrical roller bearings. There are different schemes for different configurations. At present, the calculation methods and evaluation indicators of each bearing supplier are different. First, this will cause trouble for the later load evaluation, so it is necessary to establish a tool that integrates different algorithms and different evaluation stand...

AI Technical Summary

Problems solved by technology

Spindle bearings mainly include double-row spherical roller bearings, toroidal roller bearings, double-row tapered roller bearings, and cylindrical roller bearings. There are different schemes for different configurations. At present, the calculation methods and evaluation indicators of each bearing supplier are different. First, this will cause trouble for the later load evaluation, so it is necessary to establish a tool that integrates different algorithms and different evaluation standards for the main bearing raceway check

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