drill thrust

compensator protector

钻头压力补偿器的保护杯

Research on Optimization Design for Power Unit of Full-Driller

全液压车载钻机动力头优化设计研究

easing the bit in

钻头轻压慢转钻进地层

drill(ing) head

钻头; 主轴头; 钻床床头箱; 钻削动力头;钻头头部, 钎头

Study on the Bottom Hole Pressure Properties of the Oscillating Pulse Jet-Nozzled Bit

振荡脉冲射流喷嘴钻头井底压力特性研究

Analysis Study on Feeding System of All-hydraulic Power Head Type Drill Rig;

全液压动力头式钻机给进系统的分析研究

Application Effect and the Analysis on CS14 Fully Hydraulic Driving Head Drill

CS14型全液压动力头钻机的生产应用效果及分析

On Intelligent Integrated Optimization of the Transmission Mechanism in the Driving Head of a Hydraulic Drill for Underground Anchorage

液压土锚钻机动力头传动机构的智能集成优化

tension-control cylinder

控制钻头给进的液压缸

Study on the Drivin of Cavity-front Constant-pressure Impact-rotary Hydraulic Roofbolter;

前腔常压式冲击旋转型液压锚杆钻机动力头的研究

Signal Processing of Near-Bit Weight on Bit and Torque

近钻头钻压、扭矩测量中微弱信号处理

Research on Dynamics of Driver & Hydraulic Driving System of Z6500 HDD Power Pack

Z6500水平定向钻机动力头及其液压驱动系统动力学研究

Transient dynamics analysis for driving head of valvelless impact-rotary hydraulic roofbolter based on MSC.PATRAN

基于MSC.PATRAN的无阀冲击旋转型液压锚杆钻机动力头瞬态动力学分析

The Research on Optimal Design and Dynamic Simulation for Driving Head of Valvelless Impact-Rotary Hydraulic Roofbolter;

无阀冲击旋转型液压锚杆钻机动力头优化设计与动态仿真研究

Analysis of forces on the graphite mold of core bit for oil during hot pressing

石油取芯钻头石墨模具在热压过程中的受力状况分析

bit's directional cutting ability

钻头的定向切削能力

This paper has introduced a set of test device to examine the loads on teeth of the bit at different rotary speed and under high bit-weight.

本文介绍了一套测试装置,用以测试钻头在大钻压下任意转速的牙齿受力。

pressure balanced drilling bumpersub

压力平衡式钻井震击器