一、牙轮钻机减振器的应用我国近十几年来露天矿山越来越多采用牙轮钻机穿凿炮孔。随着钻机的推广使用,钻机的振动问题引起人们普遍注意。钻机在钻孔时受孔底激振力和激振力矩的作用,产生纵向和横向振动。图1为牙轮钻机轴压及扭矩振动示波图。轴压示波图的低频基波是牙轮钻头三个牙轮绕钻杆轴线转动一周,钻具纵向振动三次,其频率为钻具转数的三倍。基波上附加的高频振动是牙轮柱齿破碎矿岩的冲击力,其随机性很大。钻机的纵向振动相对扭振来说是突 First, the application of roller cone vibration damper Over the past decade or so more and more open-pit mines have used chisel drill chisel hole. With the popularization and application of drilling rig, the vibration problem of rig has aroused people’s attention. Drilling rig bore hole by the excitation force and exciting moment role, resulting in vertical and horizontal vibration. Figure 1 shows the axial pressure and torque vibration oscillogram of a roller rig. Axial pressure oscillographic low frequency fundamental wave is the roller cone bit three teeth around the axis of rotation drill pipe, drilling vertical vibration three times, the frequency of drilling three times. The additional high-frequency vibration on the fundamental wave is the impact force of the cone teeth broken teeth, its randomness. Longitudinal vibration of drilling rig is sudden relative torsional vibration