Analysis of Force and Fatigue Life of Gears in Cutting Section of Coal Mining Machine
In order to solve the problem of fatigue loss of cut-off gears during the cutting process of coal mining machine cutting section,taking MG300/700-WD type coal mining machine cutting section as the research object,the numerical simulation software is used to analyse the force on the gears,and it is found that the maximum value of stress contact occurs in the contact position of gear cut-off gears,and the maximum value of stress is 241.69 MPa,and the analysis of the gear strain cloud graph is carried out,and it is found that the maximum value of strain occurs in the root part of engaged cut-off teeth,and the maximum value of strain occurs in the root part of engaged cut-off teeth.Gear strain map analysis,found that the maximum strain value appears in the tooth root of the meshing intercepted teeth,the maximum elastic strain value of 1.22 x 10-3 mm/mm,so in this position is most likely to be damaged,and at the same time on the different gangue nature and location of the gear fatigue life analysis,found that the life of the average number of days for the life of 184 days,for the subsequent prior to the management to provide a certain reference.
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