现代设计方法在CLX3型防爆胶轮铲车研制中的应用

介绍了现代设计方法的一些基本要素和过程。针对CLX3型防爆胶轮铲车的工作特点,运用分析软件对铲车的动力学特性和结构受力状态进行了分析。论述了这种方法在产品设计中的可行性及必要性。     

防爆铲车的双绕组串励直流电机PLC调速控制

CLX3型防爆胶轮铲车的S7-200型PLC斩波调速控制方法,控制一台进口双绕组串励直流电机,实现蓄电池无轨车辆的前后双向驱动。经过车辆长期运行检验,该控制方法编程简单,软硬件可靠、实用。     

基于虚拟样机技术的防爆胶轮车动态分析

利用Solidworks建立防爆胶轮车整车三维实体模型,并应用多体动力学软件ADAMS对胶轮车进行动态仿真分析,提取典型路况下车架铰接点、各附件与车架铰接处的动态载荷曲线以及胶轮车的转矩和功率曲线。从实际使用过程中反馈的信息来看,该仿真分析结果能够准确地反映胶轮车运行特性的实际变化趋势,验证了虚拟样车的正确性,从而为防爆胶轮车车架局部改进、减重优化及整车动力学性能的研究提供依据。     

基于虚拟样机的防爆铅酸蓄电池铲运机动力学分析

为检验所设计的铲运机的结构布置及各个部分的强度是否符合设计要求,应用虚拟样机技术对多功能铲车进行了分析设计,鉴于井下巷道路面的复杂性,对防爆铲运机在等速重载平路直行、10°爬坡、凹坑路面及凸起路面几种不同工况下的动力性能进行分析,并提取了整车动力学参数,为后续的静力学优化分析提供了重要的数据参考。     

CLX3型防爆胶轮铲运车的设计开发

介绍了CLX3型防爆胶轮铲运车的主要结构特点和技术参数,重点阐述了传动系统、制动系统、液压系统和电气系统的特点.介绍了出厂试验及井下工业性试验的情况,结果表明,该铲运车性能可靠,具有较强的适用性,能够满足生产现场的要求.     

矿用胶轮车滑移转向分析

对矿用防爆胶轮车滑移转向过程进行受力分析,推导出转弯半径、不同车轮数的转向阻力矩、设备应提供的动力矩和实际转向时所需的功率计算公式。结合WC3型胶轮车对计算公式进行了验证,证明了该方法的可行性及正确性。     

矿用胶轮车传动能效特性分析

针对现有矿用防爆胶轮车在巷道内长期运行、传动元部件老化易变形导致传动失效问题,提出利用车辆动力学理论模型进行仿真和对比试验的方法,研究其传动能效。首先根据矿用胶轮车在实际工况下防爆和传动两部分能耗组成结构进行分析研究并得出能耗组成的参数,在此基础上利用CRUISE软件建立WqC2J(A)车型的传动系统模型,进行了传动能效特性试验,将试验结果与仿真结果进行对比研究。结果表明:WqC2J(A)型胶轮车试验防爆功损为9.1 kW、传动功损为3.8 k W、试验能效为71.3%,仿真能效为74.7%,仿真与试验结果基本吻合。由此建立的胶轮车传动系统模型是可行的,为后续的防爆发动机研究和整车动力匹配奠定了基础。     

矿用防爆无轨胶轮车车架动态特性分析

针对矿用防爆无轨胶轮车在碎石巷道路面满载转弯时车架的抗疲劳强度问题,以WCJ12E型铰接式矿用胶轮车为研究对象,建立了矿用防爆无轨胶轮车车架的三维几何模型;通过对特定工况下车架的受力特点进行分析,运用模态分析方法建立了车架的有限元约束模态分析模型。有限元模态分析结果表明:碎石路面引起的激励频率为21.7 Hz,位于车架约束模态2阶频率和3阶频率之间,并且没有过于接近这2个固有频率,所以也不会引起共振的发生;发动机怠速工况激励频率接近车架第6阶固有频率38.367 Hz,可能发生共振,在发动机安装设计过程中应该采取避振措施。     

防爆胶轮铲车传动系统的改进设计

介绍了防爆胶轮铲车的用途、传动系统的任务和组成部分。原始设计存在传动轴角度不合理及U型卡易损坏等不足之处,后期的改进解决了前期试验暴露的问题,随后试验的顺利完成验证了改进设计是成功的。     

基于CRUISE的防爆无轨胶轮车动力系统建模与仿真分析

动力性和经济性是防爆无轨胶轮车在井下运行最基本、最重要的性能。目前通常使用理论公式计算的方法对其动力性指标和经济性指标进行分析。通过使用CRUISE软件搭建了防爆无轨胶轮车的整车模型,并进行爬坡度、加速度、经济性仿真分析,仿真结果表明该车能够在井下正常运行,且满足国家规定的要求。同时,仿真结果也验证了CRUISE软件分析汽车性能的可行性。     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

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.     

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     

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     

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.