牙轮

An analysis of troubles with electric system of series YZ rotary rig

YZ系列牙轮钻机电气系统故障分析

Inthe author synthetically analysed the present situation and development tread of-hole drill home and abroad.

综合分析了国内外牙轮钻机的现状及发展趋势.

Rotating reducer is an important part of blast hole , it holds biggest loads while drilling.

回转机构是牙轮钻机的重要工作部分, 在钻孔作业中承受最大的负荷.

Diameter controlling is of great importance in rock bit manufacturing.

保证三牙轮钻头的直径是钻头制造工艺的重点.

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

The investigation directions of the high speed roller bIt'sealing are put forward in the future.

针对这些情况提出高速牙轮钻头轴承密封在今后的研究方向.

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 main failure patterns of the sliding bearing of a cone bit are gluing and abrasion.

牙轮钻头滑动轴承的主要失效形式是胶合和磨粒磨损.

A static analysis of the No. 2 leg-cone of a tricone bit is conducted by the finite element method, and the distribution pattern of the contact stress on the leg journal and thrust surface with different bearing clearances is worked out.

用有限元法对某型三牙轮钻头的2号牙轮－牙爪进行了静力计算，求得不同轴承间隙时牙爪轴颈及止推面上的接触应力分布规律。

Drilling with cone ( drag ) bit in the section.

此段地层采用牙轮 ( 刮刀 ) 钻头钻进.

The tool pusher is fishing a cutter.

大班正在打捞落鱼,那是一个牙轮.

After a brief description of the design feature and rock breaking mechanism of the disc one cone bit, the rock breaking process, test data and dynamic curves of a rock penetration test on a gritstone are introduced in detail.

在简述盘式单牙轮钻头的结构特点和破岩机理的基础上，详细介绍了这种钻头在资中重二砂岩上进行台架试验的破岩过程、试验数据和动态曲线。

Calculate the engaging distance between inserts and slots and the least thickness from bearing to contour of cone automatically.

自动计算相邻牙轮之间牙齿与齿槽的最小啮合间隙和牙齿底部到牙轮内孔的最小壁厚。

The failure analysis of the high speed roller bit bearing.

高速牙轮钻头轴承的失效分析.

There are many factors influencing the bit diameter and the tooth row intermesh due to the complicated shapes of the main parts of a three cone bit.

三牙轮钻头主要零件形状复杂，影响钻头直径及牙轮齿圈啮合误差的因素较多。

Large circular-arc drum-shaped roller bearing for cone bit

牙轮钻头大圆弧鼓形滚子轴承设计

This paper introduces gear wheel drill speed system which composed of Siemens PLC and Siemens inverter.

介绍了由西门子PLC和变频器组成的牙轮钻机的调速系统.

Taking the radial wear allowance of the bearing pair as the monitoring parameter of the bearing working status, and taking the rapid change of the bit speed and the working torque as the alarm signal, the trial of alarm technology for cone dropping is introduced.

文章介绍一种以轴承副的径向磨损量作为轴承工作状态监测参数、以钻头机械钻速和工作扭矩的急剧变化作为预警信号的牙轮脱落预警技术的试验研究成果。

This paper analyses the factors that affect the contact stress of rock bit journal bearing.

文章分析了牙轮钻头滑动轴承接触力学性质的影响因素.

Steel tooth bit can increase the bit's stability and lower the tooth impact load, and enhance its wear resistance.

钢齿牙轮钻头增强了工作的平稳性，降低了牙齿的冲击载荷，使牙轮钻头的耐磨性能得到提高；

Design calculation process as well as machining technology of rock bit are detailed introduced.

详细介绍了104牙轮钻头的设计计算过程和加工工艺.

Influence of Manufacturing Errors on Tooth Row Intermesh of Three Cone Bits

制造误差对三牙轮钻头齿圈啮合的影响

The motion and force of cone bit is extraordinary complex on bottom hole.

牙轮钻头在井底工作时的运动状态和受力情况是相当复杂的.

The primary investigation of the sealing system of the high speed roller bit bearing.

高速牙轮钻头轴承密封系统的初步研究.

Research onto the crowned design of rock bit cylindrical roller bearing

牙轮钻头圆柱滚子轴承的凸度设计研究

This paper introduces the application of the object-oriented technology in three roller bIt'simulation.

本文介绍了 面向对象 技术在三牙轮钻头仿真中的应用.

This paper describes the determination methods on main parameters of blast-hole drill.

介绍了牙轮钻机主参数的选择方法.

Bearing quickly losing effectiveness will lead to the manifest reduction of its service life.

轴承的快速失效,导致牙轮钻头寿命的明显降低.

The ideas and the process of the development of three-cone bit CAD system based on AutoCAD with AutoCAD embedded VBA language are represented. The common method of developing three-cone bit CAD system in the environment of AutoCAD is illustrated.

阐述了采用内嵌于AutoCAD的VBA语言开发基于AutoCAD的三牙轮钻头计算机辅助设计系统的思想和实现，及在AutoCAD环境下开发三牙轮钻头CAD系统的一般方法。

Properties, Design and Use of Combined Cone Type Cutting Head

组合式牙轮钻头的特性、设计和使用