Mechanical Analysis of Non-Linear Contact between Circular Chain and Driving Sprocket of Air Heavy Media Machine in Coal Processing Plant
In order to further investigate the wear problem of the contact part between the circular chain and the driving sprocket during the operation of the coal preparation plant air heavy intermediary machine,the FQZ66 air heavy intermediary machine is taken as the object of study,and based on the modelling and finite element analysis of the contact part between the driving sprocket and the circular chain of the machine,it is determined that the wear is caused by the high stress at the upper part of the chain nest plane,which is close to the edge of the groove of the vertical ring.In this regard,the main parameters of the structure were further optimized by response surface analysis optimization method,and the results showed that the maximum stress suffered by the optimized drive sprocket at the start-up instant was 1333.9 MPa,which was 17.3％less than that before the optimization;and the maximum strain produced by the drive sprocket at the start-up instant was 0.007 3,which was 17％less than that before the optimization,and certain optimization effect was achieved.
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