rotary drill

Finite Element Analysis to Jaw of Mine-Used Rotary Drill Bit

矿用牙轮钻头牙爪有限元分析

The mast assembly supports the rotary drill head and its hoisting mechanism.

支架元件支援转动钻头及其提升机构.

After reformation of drill pump, rotary table and drilling rod, the triple-men portable rig has achieved good results when drilling is in breed zone by netting box and other land areas.

对三人钻机的压水泵、转盘、钻杆部件进行改进后，三人钻机在围网养殖区以及其它陆上钻井时，都取得了良好的效果。

The results of research in this article would provide a theoretical and arithmetic method for the fluid-structure interaction analysis of the rotary slender shaft, the stirring shaft in the chemical engineering machinery and the rod string and drill string in the oil drilling and production engineering.

本文研究成果可为化工机械中的细长旋转轴和搅拌轴、石油钻采工程中的抽油杆柱和钻柱的固液耦合分析提供了理论基础和计算方法。

Analysis and improvement on fast feed circuit of KY-120 underground rotary drill

地下牙轮钻机快速推进回路分析与改进

Our main products are electric drill, marble cutter, angle grinder, rotary hammer, pipe dredger, etc.

主要产品有手电钻 、 石材切割机 、 角向磨光机 、 电锤 、 管道疏通器等.

There are few systematical formulas to calculate the roller number and the distances between rollers in crawler travel system of rotary pile drill.

旋挖钻机履带式行走装置支重轮之间的距离及其数量的多少，尚缺少系统的计算公式。

Electrically driven rotary sidewall sampler ANALYSING DYNAMIC CHARACTERISTICS OF DRILLING STRING EDDY OF INSIDE CONTAINING DRILL FLUID

电动钻进式井壁取心器内含钻井液的钻柱涡动动力特性分析

The structural characteristic and operating principles of KD type hydraulic tap hill drill with folding rotary mechanism are introduced.

详细介绍了KD型转臂折叠式全液压开铁口机的机构组成、工作原理和结构特点。

YZ-35 rotary drill Dragon Gate Column Break Reason Analysis and Processing

YZ-35牙轮钻机龙门架立柱断裂原因分析及处理

By means of analyzing the fast feed circuit of the hydraulic system of KY-120 underground rotary drill, the main factors which affect the service life of feed cylinder are revealed and some suggestions are put forward for the improvement of the fast feed circuit.

从分析KY-120型地下牙轮钻机液压系统的快速推进回路入手，指出了影响推进油缸使用寿命的主要原因，并提出了改进意见。

The development of rotary drill has experienced a course of hardly pioneering work.

我国牙轮钻机的发展经历了一段艰苦创业的过程。

Analysis to Elastic Flow Value of Cylindrical Roller Bearing in Mine-Used Rotary Drill Bit

矿用牙轮钻头中圆柱滚子轴承弹流数值解分析

Analysis on Rotary Drill Rod Failure and Producing Technology

旋挖钻机钻杆失效形式分析及制造工艺

Application of rotary drill in enclosure pile construction on waterless sandy Coble stratum

旋挖钻机在无水砂卵石地层围护桩施工中的应用

The improvement of KY& 150 type rotary drill travel unit

KY-150型牙轮钻机行走部改造

This paper introduced the application of new Hall sensor in the voltage and current regulation of the speed-regulation system of rotary three-cone bit drill and analyzed the mode of operation, the structural characteristic and the use result of the component element.

文章介绍了在牙轮钻机调速系统的电压、电流调节中，采用了新型霍尔元件，并具体分析了其工作方式、构成特性以及使用效果。

A Mathematic Model for the Unloaded Power of Rotary Drill Str in g in Deep Straight Well

深直井旋转钻柱空转功率消耗的数学建模

Rotary drill is a kind of drilling machine shattering rocks by cutting drill bit, also known as rotary cutting drilling machine.

旋转钻机是用切削式钻头破碎岩石的钻孔机械，也称为旋转切削式钻机。

The method of rotary drilling hole and protecting hole wall by static mud is an advanced technique to drill hole.

静态泥浆护壁旋挖成孔工艺是一项先进的成孔工艺。