Optimized design of drilling rod structure parameter for screw miner

Base on the analysis and research on coal conveying mechanism of the screw drilling rods,the coal conveying rate was selected as the target of the optimized design.According to the inner diameter of the blade for drilling rods,the working rotary speed of the drilling rods,the screwing up angle of the blade and the stroke as the variation of the design and in consideration of the influences of the lump coal rate,float coal quantity,unit energy consumption and other factors,a mathematics model was established.