单轨吊车推广应用中的几个问题

该文通过分析蓄电池单轨吊车推广应用中的几个具体问题,相继建立了机车设备(配件)档案、病历档案、蓄电池充电及运行档案、油脂管理档案,提高了机车的管理、维修整体水平,减少了单轨吊机车运输事故率。     

矿用铁路机车设备维修机制探讨

分析了矿用铁路机车设备维修机制中存在的问题,并运用现代设备管理理论,结合矿用铁路机车设备的特点和管理现状,提出了改进现行机车设备管理维修机制的措施、方法和手段。     

地面排矸多媒体机车监控系统

兖州矿业 (集团 )公司东滩煤矿选用的地面排矸多媒体机车监控系统 ,不仅保证机车速度而且保障运输安全 ,较好地解决了机车在运输车场的通过能力问题。该系统由室内集控设备和现场信号设备组成。其中 ,控制机车运行的信号设备均设在现场 ,有电动转辙机、信号机、传感器和摄像仪 ,转辙机可以改变机车的行车方向 ,信号机指示机车的开停 ,传感器跟踪监测机车位置 ,摄像仪监视车场列车占道情况 ;室内设备由操作控制台、继电器柜、电源柜、防雷柜以及大屏幕显示器等组成。系统主机 984 - 385控制软件采用模块化结构 ,整个程序分为 2个程序段。在第…     

矿井辅助运输网络化控制技术的研究与应用

本文介绍了为解决矿井辅助运输设备控制技术落后,机车运输范围相对独立,设备利用率低,占用设备和人员较多,制约矿井的高产高效现代化建设的问题,通过安装先进的辅助运输控制设备,避免车辆在使用过程中机车因运行控制不当,出现追尾、碰头、堵车、塞车事故,提高运输效率和运输安全性。     

基于CDMA2000网络的矿用机车通信终端设计

针对煤矿胶轮车运输难以监管的现状,提出基于CDMA2000网络的矿用机车通信终端设计,给出了硬件设计和软件设计流程。该通信终端通过煤矿应用表明,具有语音通话、机车环境和运行参数上传、调度信息下发显示及语音合成播报功能,且其语音通话稳定,TCP上下行数据信息传输可靠,实时性高,解决了煤矿胶轮车运输监管的难题。     

立式冲击粉碎机分级叶轮的优化设计

以对立式冲击粉碎机分级室内物料颗粒的动力学分析所得的分级粒径公式为基础 ,建立了分级叶轮优化设计的数学模型。通过运行具有通用性的复合形优化设计程序 ,对分级叶轮的结构进行优化设计 ,并探讨了结构参数和操作参数的变化对分级粒径的影响。     

矿用空压机恒压供气及联动控制系统的设计与应用

针对米村矿空压机在使用过程中存在着空压机供气压力不稳定、保护装置不可靠、控制系统老化、设备运行参数无法精确显示等问题,设计了一种空压机恒压供气与联动控制系统方案,该控制系统可实现空压机的恒压供气,增加空压机联动控制,提高了保护的灵敏性,能详细显示各种运行参数。实际应用表明,该控制系统运行良好,可提高空压机空气的可靠性,保证矿井用风要求。     

矿区铁路中机车运用的探讨

分析矿区铁路运输现状和机车运用方面存在的问题,提出了从机车运用组织形式,作业区域划分,调车组的合理安排,现场作业标准,设备更新和加大职工培训等方面改善机车运用方式,实现机车有效运用。     

矿用牵引机车电液控制系统的设计与研究

针对长大隧道施工对牵引机车的要求,设计了牵引机车电控液驱控制系统。该控制系统采用PID智能控制算法分别对变量泵和变量马达的排量进行智能调节,使输出转速达到设定转速。运用AMEsim液压仿真软件平台对牵引机车电液控制系统进行建模,并对相关参数进行优化设计,实现动态控制仿真。对控制系统进行了仿真和试验,结果表明,其能够准确、快速、平稳地对转速进行调节。     

王庄煤矿62盘区辅助运输优化设计与实现

为了解决王庄煤矿62盘区辅助运输目前存在拐弯多、巷道复杂、设备满足不了新工作面运输需求等问题,对62盘区的辅助运输系统进行了优化设计,采用无极绳连续牵引车作为主要设备,并且进行了相关的选型、安装、调试。系统顺利运行验证了设计方案的可行性和科学性,显示了无极绳连续牵引技术在辅助运输系统中的应用潜力和良好前景。     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new     

注浆加固技术在十三矿-685 m进风大巷中的应用

针对煤矿开采深度不断向深部延伸,掘进巷道受深部高应力的影响越来越大,巷道围岩整体稳定性差,矿山压力显现越剧烈现象,一般锚网喷加锚索支护无法从根本上控制巷道的变形。总结了平煤股份十三矿-685 m进风大巷注浆加固技术,依据对巷道掘进之后变形监测数据的采集,对巷道变形机理进行分析研究,并对注浆时段进行了合理选择,在对巷道的注浆工艺进行了充分论证的基础上,对巷道进行了注浆。注浆后效果表明:巷道滞后注浆时间段的选择非常重要,巷道在恰当的时间内进行注浆加固施工,能有效控制巷道的变形,巷道注浆后变形量明显减小,岩体的稳定性明显增强,减少了巷道日常维修工作,降低了矿井的生产成本,保障了矿井的安全生产。     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel