通过机载单臂式锚杆钻机钻臂的受力分析,当钻臂升降油缸上铰接点位于伸缩梁内梁与外梁的重叠位置时,钻臂在工作过程中所受到的正应力最小。同时,通过钻臂升降油缸工作尺寸和受力分析,给出了升降油缸工作行程及缸径的确定方法,为钻臂升降油缸的选型计算提供了理论依据。 Through the analysis of the force of the boom of the airborne single-arm anchor drill rig, the normal stress on the drill arm is minimized during the working process when the hinge point of the boom lifting cylinder is located at the overlapping position of the inner beam and the outer beam of the telescopic beam. At the same time, the work stroke and the bore diameter of lifting cylinder are given through the working dimensions and force analysis of the lifting arm of the boom, which provides a theoretical basis for the selection calculation of the lifting cylinder of the boom.