煤矿坑道钻机调角装置是钻机的主要执行机构,进行强度校验是设计的关键步骤.介绍了一种调角装置工作原理,利用仿真软件进行了钻机调角装置的动力学仿真,特别是结合钻机在使用中的情况,得到了其部分铰接点的受力曲线,验证了设计合理性和力学可靠性,为以后研究其工作特性和结构设计提供依据.

Aiming at the new progress and new trends of coal mine tunnel rigs in China, this paper introduces the development of conventional coal mine tunnel rigs, discusses the application of new technologies such as directional drilling and remote automatic control in the development of coal mine tunnel rigs, and points out the development trend of coal mine tunnel rigs in China. According to the development of domestic coal mine tunnel drilling rigs and related technologies, it is of great significance to construct intelligent drilling face and comprehensively improve the adaptability and reliability of mine tunnel drilling machine to ensure the safety and efficient production of coal mine.

为了满足松软煤层瓦斯抽放高效钻孔施工的要求,研制了ZDY2800LG高转速螺旋钻进钻机.介绍了钻机的研制思路和试验应用情况,解决了松软煤层钻进成孔问题.通过现场试验,钻机能力大、施工效率高,适合松软煤层钻孔施工,能为矿井高效安全开采提供设备保障.

According to the problems of drilling equipment in soft-extrude coal seam with insufficient drilling and acci-dent treatment ability,large volume and poor integration,the ZDY5000RF high-power two-track crawler drilling rig is devel-oped,combined with the need of gas drainage borehole construction in soft-extrude coal seam. The drilling rig uses two depart-ments and safety layout,crawler drive walking,so the safety protection system and protection measures are increased,the whole machine power reaches 75 kW,the rate torque reaches to 5000 N·m,and the pulling force is up to 210 kN. The field test is conducted in Qinan Coal Mine in Huaibei City,in the soft-extrude coal seam,the f value is about 0. 5,five drill holes is com-pleted with the depth is more than 200 m. The test results show that the drilling rig can meet the requirements of 200 m gas drainage drilling in soft-extrude coal seam based on the significant advantages of high power,small volume,easy removal,high safety,high drilling and accident processing capability,therefore,it can provide equipment guarantee for coal gas disaster con-trolling in soft-extrude coal seam.

As a kind of design technique, industrial moulding design has been applying in all kinds of production design, especial the new products. Taking the ZDY Directional Drilling Rigs as a example, the paper gives a detailed description of application and research of industrial moulding design in developing and design of ZDY directional drilling rigs. The results of production and application indicate that industrial design on modeling plays a very important role in improving operate comfort and appearances of drilling rigs.

Air drilling equipment has several problems including low level of integration, complex drilling process and tedious operation. In order to solve these problems, technical parameters of ZDY5000RF drill rig and auxiliary equipment are introduced. Field experiment was implemented in Qinan Coal Mine and showed that ZDT5000RF rig has the capacity to drill 200m deep holes in soft seams with f around 0.5. Application also indicated that the rig has significant advantages such as high level integration remarkable dust extraction capacity and high drilling effi-ciency. All the technical indicators have reached the design requirements.

为适应高瓦斯矿井瓦斯抽放钻孔高效施工的需要,研制出ZDY6000L(B)定向钻机,该钻机布局紧凑合理、工艺适应性强;液压系统采用负载敏感控制技术,实现2个泵串联开式系统,改善了回转、给进工况和节能性.通过现场试验,钻机施工效率高、功能齐全、操作简单,达到设计要求,能为矿井高效安全开采提供设备保障.

为满足用户对整体式钻机提出的更高要求,采用新结构研制了ZDY6000LD（B）履带式全液压坑道钻机调角机构,利用ABAQUS软件建立调角机构中关键部件有限元模型并进行模态和稳态动力学分析,得出前10阶固有频率及振型,评估调角机构是否满足设计要求。

Combined with the Measure While Drilling (MWD) system of the new kilometers directional drilling rig and the method of directional drilling technology, this paper uses animated video technology of product to simulate the major workflow and the actions of whole technology and equipment which used to construct drilling hole for gas drainage in the coal mine, and the production of the animated videos make the related personnel establish the full visual impression in the practical application course of whole directional drilling technology and equipment, and it also could be used for the propaganda of related technology products and personnel technical training, and help to promote the application of this technology.

This paper introduces a boosting type cylinder clamp with symmetrical arrangement of force increasing device on both sides.The clamping force produced by cylinder acts on the drill rod based on lever boosting principle.This clamp has the advantages of small size and high clamping ability.The selection of the main design parameters and the calculation process are introduced in detail.

In order to meet the high requirements of integral drill rig, all hydraulic track rig ZDY6000LD(B) is developed and produced by using new structure and new technology as well as new industrial design. The configuration of the rig is compact and reasonable, its structure is new, its maneuverability is strong, it can move fast and conveniently, its drilling efficiency is high, its technological adaptability is strong. It can drill gas drainage borehole through layers and along layers, borehole for water detection and drainage as well as borehole for grouting in floor. The paper introduced the main technical specifications, structure, characteristics of hydraulic system, drilling test of the rig.

ZDY4000LF split type caterpillar drill was developed successfully according to the requirements of high-gas coal mine gas drainage drilling and construction characteristics. The drill has many advantages,such as small size,novel structure,complete function,simple operation,power maneuverability and suitable for gas control in high gas mine. The drill has a larger regulation range of elevation angle,the agimuth angle and drilling hight. Drilling techniques can be suitable for bedding holes and through beds holes.

The paper introduced the design idea and basis for the series development of the directional drilling rig and the basic performance parameters and the main structure features of the ZDY crawler mode directional drilling rig.In combination with the deposition conditions of the rock and coal in the underground mine and the features of the long distance gas drainage directional borehole required for the high accurate tracing in the construction,the paper concluded the major functions of the matched between the directional drilling rig and the directional drilling technique.The paper in detail stated the general layout,hydraulic system,safety protection,key structure optimized design of the parts and key technology problems.The analysis on the typical production applied cases approved that the ZDY series crawler mode directional drilling rig could well and fully meet the actual production requirements.

Based on the introduction of structure and merits of multi-luffing engineering drilling rig,load sensing pump working principle was introduced along with rotating hydraulic system.Through the using of AMESim software,a simulation research on load sensing pump characteristics for engineering drilling rig was done,the pressure and flow rate characteristics in rotating system in normal condition were gotten.It raise the knowing of load sensing system for engineering drilling rig,it also can be a reference for hydraulic system design.

Using the finite element analysis software ANSYS established derrick model of CBM drilling rig car and calculated its static strength and model analysis. The maximum Mises stress and the weakest position of derrick was determined and given its four bands of natural frequencies and corresponding vibration model. The conclusion can be gotten from calculation results that the structure of derrick meet the requirements of design.

According to the limited angle adjustment scope,relative large volume and high quality and other problems of the domestic medium and small drilling machines,with the direction driving structure and the tooth form sealing technology,a ZDY850S full hydraulic tunnel drilling rig was designed.The main technical parameters of the drilling rig,the drilling ring structure and the hydraulic system were introduced.An inspection and measurement was conduced on the drilling rig.The inspection results showed that the completed operation of the drilling rig was in normal,the performances were excellent and the each test and measured technical index could reach the designed requirements.

Sub horizontal long hole drilling technique is an important approach to improve the efficiency of gas drainage and ensure safe mining in underground coal mines.Drilling rig is the main drilling equipment to realize the pivotal technique.The development of the track-mounted ZDY6000LD(A) hydraulic directional drilling rig is introduced in this article,including the position,track-mounted,main structure and hydraulic system.Underground test proved that the rig is suitable to drill branched boreholes of more than 1000 m,reliable in performance,high in precision,stable,fast and convenient in movement.

To the problem of polytropic drilling load of feeding body existed in the drilling digs machine,the design functional requirements and the design plan of feeding body of drilling are put forward.The finite element model of drilling machine is built by 3 D modeling software and finite element analysis software.In order to know if the dynamical behavior of drilling machine has met the requirements,modal analysis and static dynamics simulation are accomplished.The test,at last,results indicates that the drilling design conforms to technical targets in significant measure.

According to the single suitable drilling technique,low control accuracy,and removing difficulty of the present separated component type full hydraulic tunnel drilling rig and the long auxiliary operation time problem of the present crawler type full hydraulic tunnel drilling rig,the load feedback,constant-pressure variation and remote control technology was applied to the design of the hydraulic system of the ZDY6000LD(A) mode crawler type full hydraulic tunnel drilling rig,including the rotation,feeder,travel,main shaft braking and other performance return lines as well as the drilling tools down and up,clamped rotation,clamping releasing and other linkage functions.With the application of the AMESim software,a simulation analysis and site application was conducted on the load features of the reverse rotation return circuit.The results showed that the theoretical features of the load sensitive system would be well fitted with the actual drilling performances.The ZDY6000LD(A) mode drilling rig could be suitable for the rotation driling,directional drilling,complex drilling and other drilling techniques and the hydraulic system could have a high technical adaptability,an energy saving and a remote operation control.

ZDY6000LD(A)型履带式全液压坑道定向钻进钻机是一种适用于煤矿井下瓦斯抽采(放)定向孔施工的新产品.钻机采用开式三泵系统,应用了负载敏感和恒压比例变量等先进的液压技术,系统能耗低、稳定性高.钻机一体化程度高,平台上集成了主机、泵站、操纵台、履带车体、水泵、电磁起动器、稳固油缸、照明灯等钻探装置和设备,整机机动性好、转移快捷、井下使用方便.在钻机设计中,结合数字化设计方法,利用软件对虚拟样机进行建模和分析,缩短了设计周期,提高了钻机性能.通过室内试验和工业性试验,钻机性能达到设计要求,具有良好的推广前景.