【摘要】 采用旋转切割液压马达与推进液压缸并联的油路连接方式 ,用减压阀控制最大推进力并自动协调液压马达转速和液压缸的进给速度 ,使旋转切割和推进速度具有较大的速度刚度 ,避免了现有液压锚杆钻机支腿采用旁路节流调速回路 ,支腿速度刚度差的缺点 ,实现液压锚杆钻机高效率的工作更多还原

【Abstract】 Using oil lines parallel connection of rotary-cutting oil motor and move-in hydraulic cylinder, and relief valve automatic coordinate the speed of hydraulic motor and the feed-in of cylinder, to get more speed stability of rotary-cutting and move-in, in order to avoid of using by-pass reducing speed controlling circuit of hydraulic anchor-arm driller’ support beam, which have bad speed stability, to reach a high working efficiency of hydraulic anchor arm driller.更多还原