Made use of the genetic algorithm advantage in the optimal of nonlinear programming problem,set up the mathematic model by the least volume of the coal auger transmission part reducer,and got the optimized value.

• 利用遗传算法在非线性规划问题优化中的优越性,对螺旋钻采煤机传动部减速器以体积最小建立数学模型,并进行优化得到优化解。