市场引导下我国煤矿钻孔与凿岩机械的发展趋势

跟据2005─2009年期间煤矿钻孔与凿岩机械安全标志产品准用证及其生产企业基本状况,分析了产品发展的变化趋势。目前,各类煤矿钻孔与凿岩机械生产企业达200多家,获安全标志准用证700多份。煤矿钻孔与凿岩机械90%以上的产品,用于煤矿锚杆支护、瓦斯治理、井下采掘和放顶爆破,其中,煤矿专用产品又占85%以上。各种类型产品中,手持式电钻的市场急剧收缩,已逐渐被手持式气动钻机替代;电动锚杆钻机和电动凿岩机已被淘汰,气动锚杆钻机以及各类气动回转式钻机、液压坑道钻机和液压钻车发展较快。分析认为,锚杆支护和瓦斯治理使用的钻孔与凿岩机械将进一步发展,特别是锚杆钻车、深孔钻车、钻装锚机组和履带式液压坑道钻机等机械化设备将大力发展;液压凿岩机与液压掘进钻车是岩巷机械化的主要发展方向;气动钻孔与凿岩机械将长期存在;煤矿用回转钻具与锚杆支护用钻具有广阔市场。     

气动架柱式钻机研发与应用

目前在煤巷和软岩支护作业中,普遍使用气动旋转式锚杆钻机。在巷道两帮支护作业中,主要使用气腿式锚杆钻机和手持式锚杆钻机,常存在着工人劳动强度大、操作困难和不安全等问题,增加了生产成本,影响了两帮锚杆(索)施工效率。新研发的气动架柱式钻机是具有旋转、推进组合功能的锚杆钻机,可有效解决巷道两帮锚杆(索)支护作业中,钻孔不好操作、劳动强度大和钻孔准确定位等问题。该钻机在小孔径50m探水、探断层及全长锚固等工程领域中,有着不可替代的作用。该钻机已获得国家实用专利;该钻机及其操作方法已获得国家发明专利。     

手持式气动帮锚杆扭矩扳手

为了解决手持式气动帮锚杆钻机帮部扭矩不足的问题,因顶部锚杆机技术使用比较成熟,运用顶部锚杆机改制成手持式气动帮锚杆扭矩扳手,通过现场实际应用,可有效解决帮部锚杆扭矩不足问题,满足高预应力锚杆支护的要求,且使用方便,提高工作效率,是弥补手持式气动帮锚杆钻机帮部扭矩不足的有力帮部扭矩工具。     

新矿集团研制成功手持式气动钻机

日前 ,山东泰山建能机械公司独立研制开发成功手持式气动钻机。泰山建能机械公司是特大型煤炭企业新汶矿业集团的 1个二级单位 ,以制造大中型煤矿机电产品和建材设备为主 ,有较强的科研实力。手持式气动钻机是该公司根据煤巷锚杆支护特点 ,吸收国内外先进技术成果研制而成的风动煤钻。它以压缩空气为动力 ,主要由齿轮式发动机、进气操纵手柄、辅助手柄、减速器、传动夹持机构及外供水系统等组成 ,可进行湿式打眼 ,解决了打眼过程中产生煤尘及煤电钻产生火花引发煤尘爆炸的安全问题。该手持式气动钻机主要技术性能完全满足煤巷掘进时锚杆孔钻…     

MQS-30B气动手持式锚杆钻机在龙口矿区的推广应用

该文通过对MQS-30B气动手持式锚杆钻机的技术特点、技术参数、使用条件、操作要领和注意事项、故障原因和处理方法、技术改进和性能对比等多个方面进行了阐述,为锚杆钻机在龙口矿区的推广应用奠定了坚实的理论基础。有利地推动了锚杆钻机在龙口矿区的全面推广应用。     

全液压履带式底板锚杆钻机设计

针对我国煤矿井下广泛使用气动锚杆钻机进行巷道底板锚索钻孔,气动锚杆钻机由于动力较小,重量较大,移机笨重,外形尺寸大,耗气量大等缺点,设计出一种新型的全液压履带式底板锚杆钻机,确定其系统设计参数及总体结构方案和液压系统方案,改变了锚杆钻机的应用现状,在煤矿巷道支护工程上具有广泛的应用价值。     

液压锚杆钻车在某矿中的应用研究

某矿为煤与瓦斯突出矿井,掘进煤巷前需要采取局部防突措施。局部防突措施孔由人工使用气动手持式钻机施工,劳动强度高,且施工效率低,影响掘进进度。为了降低劳动强度、提高施工效率,使用CMM2-20型煤矿用液压锚杆钻车。介绍了试验过程,并将液压锚杆钻车与传统的气动手持式钻机的应用效果进行了对比。结果表明,使用液压锚杆钻车打钻的月进尺比原来提高了46%,效果明显,有一定的借鉴意义。     

手持式水压锚杆钻机动态特性计算机仿真

建立了手持式水压锚杆钻机动态性能仿真模型,在此基础上,用MATLAB中的Simu-link工具箱对其动态特性进行计算机仿真,得到了在负载突变时手持式水压锚杆钻机压力和角速度的动态变化规律,为手持式水压锚杆钻机的设计和使用提供参考。     

新型锚杆钻机在煤矿的应用

经过几年对锚杆钻机的跟踪研究,发现锚杆钻机在围岩作业中常遇到软岩中有硬岩夹层的现象,造成施工过程经常更换钻具的问题。在对旋转冲击钻孔破岩机理进行分析的基础上,以气动凿岩机为基础,对其机身和机头部分进行研制,并对旋转一冲击式锚杆钻机结构原理和特点作了论述。简单论述了新型锚杆钻机—旋转-冲击式钻机在各个煤矿的应用情况。     

MQT—60B气动侧帮锚杆钻机的设计

介绍了煤矿煤巷支护的配套机具MQT— 6 0B型气动侧帮锚杆钻机的研制过程 ,以及钻机的工作原理、基本结构、特点等。根据煤巷侧壁钻孔的要求 ,实现了支腿行程的控制、调整。     

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.