exploitingdam materials by large - diameter geared drill is discussed, and the results show that itis feasible.
通过对高塔水电站面板堆石坝坝料开采爆破试验结果的分析，探讨了用大孔径牙轮钻机开采堆石坝料的可行性。
This paper analyses the main factors that influence the speed of drilling hole,puts forward the methods to settle the main working parameters of the rotary drill.
分析了影响牙轮钻机钻孔速度的主要因素,提出了钻机主要工作参数的确定方法。
Wavelet packet transform can not only detect integer harmonics of non-steady signal,but also detect non-integer harmonics,and wavelet transform is sensitive to signal of the strange point,it can be used to track roller drilling vibration signal.
小波包变换不仅能检测非平稳信号的整次谐波,还能检测信号的非整次谐波,而且小波变换本身对信号的奇异点十分敏感,因此可以用来跟踪牙轮钻机振动信号。
KY-150 Type Rotary Drill Modified Running Gear
KY-150型牙轮钻机走行部改造
Contact Analysis of Gear Transmission in Rotating Reducer of Blasthole Drills based on ANSYS
基于ANSYS的牙轮钻机回转机构齿轮接触分析
bridge of the bit
四牙轮钻头牙轮支架
Simulation model of drilling process of three-cone bit
三牙轮钻头破岩过程计算机仿真模型
CAD system for three－cone bit
三牙轮钻头计算机辅助设计系统的研究
STUDY OF THE LOAD ON THE JOURNAL BEARINGS OF THE TRICONE BIT BY THE METHOD OF ANALYSIS OF THE RANDOM PROCESS
用随机过程分析方法研究牙轮钻头轴承载荷
Experimental Research on Working Performance of New Floating Ring Journal Bearings
新型牙轮钻头浮动套轴承工作机理试验研究
cone type roller bearing rock bit
滚柱轴承锥形牙轮钻头
Blast hole tricone rock bits
GB/T13343-1992矿用三牙轮钻头
insert rock bit
镶硬合金齿牙轮钻头
4.14 Drilling with cone (drag) bit in the section.
此段地层采用牙轮（刮刀）钻头钻进。
Rotary drilling machine replacing downhole drill to accomplish controllable blasting of slope
牙轮钻取代边坡钻完成边帮控制爆破
Research on the simulation of the tooth slippage of the cone bit
牙轮钻头牙齿滑移量规律的仿真研究
Comparative analysis of drilling characteristics of dia- mond bits and roller bits
金刚石钻头与牙轮钻头钻井特点对比分析
foot engine with electric motor
牙科脚踏电动二用钻机
engine ,drill, dental, with swivel arm
牙科钻机,带旋转杆
Application of Roller Bit Combination Drilling Technology in Nappe Strata of Qingxi Oilfield
牙轮钻头复合钻进在青西推覆体地层的应用
Drilling with cone( drag) bit in the section.
此段地层采用牙轮（刀）头钻进。