本文提出了把支臂在拐点角位置时的推进器设计成水平。把油缸行程平均分配在拐点角位置两侧的设计新方法,可实现断面中部的孔向与巷道纵向轴线的偏差和两相邻炮孔的平行误差同时为最小。 In this paper, the propulsion of the arm in corner position is designed to be level. The new method of equally distributing the cylinder stroke to both sides of the inflection point position can minimize the deviation of the hole in the middle section of the section from the longitudinal axis of the tunnel and the parallel errors of two adjacent holes.