斜巷风动闭锁装置的试制与应用

本文针对矿井斜巷设置的阻车器和挡车栏之间没有闭锁关系，工人在操作时由于不正确使用阻、挡车装置，极易造成斜巷跑车事故。通过试制的闭锁装置同时控制阻车器和挡车栏的开关，解决工人误操作而发生的跑车事故。     

GQZC—1型自动复位阻车器

ＧＱＺＣ—１型自动复位阻车器新汶矿务局良庄煤矿韩志国董崇远关键词自动复位阻车器斜井跑车事故智能化控制１概述斜井跑车事故占矿井运输事故的首位，而平车场跑车事故占跑车事故的８６％以上。因此实现斜巷提升安全，解决平车场防跑车问题是防止斜井上车场跑车事故最为...     

斜巷风动防跑车闭锁装置的研制与应用

斜巷风动闭锁防跑车装置能有效地防止斜巷上平盘放车时因车没连接或未挂钩头且阻车器挡车栏均提前打开就放车而出现的跑车事故。     

斜巷防跑车控制系统的研制

斜巷运输是井下作业的重要环节,安装斜巷防跑车装置可以有效防止在运输过程中由于跑车、断绳等事故造成的人员伤亡和财产损失。斜巷防跑车装置主要由平巷阻车器、蓄能器、挡车栏及控制系统组成,控制系统根据传感器信号数据判断是否发生事故,完善的控制系统可以大大提高斜巷防跑车制动的准确性。     

气控联锁斜巷防跑车装置获专利权

兖州东方机电有限公司根据煤矿现场工况的需要，研制出了ＱＳＦ－８型气控联锁斜巷防跑车装置，并且已经获得了专利权。这种装置是由阻车器、挡车器或者挡车栏、检绳装置、操作台等组成的。其中，上车场两组阻车器之间的距离为一次下放串车长度加上连车作业所需要的间距，...     

斜巷风动闭锁防跑车装置的研制与应用

通过对斜巷跑车原因的分析 ,本着超前预防的原则研制了斜巷风动闭锁防跑车装置。该装置能规范作业人员的操作 ,使斜巷放车过程必须按正确程序作业 ;同时能杜绝斜巷上平盘放车时 ,因车没连接或未挂钩头且阻车器挡车栏均提前打开就放车等误操作行为 ,从而避免跑车事故的发生。     

一种简单易行的自动复位阻车器

<正> 阻车器是布置在斜巷上部车场的防跑车装置。据有关资料统计,大约80%的跑车事故发生在坡头,因此设置性能可靠的阻车器对防止跑车事故具有重要意义。为了满足井下实际使用需要,我们设计了一种简单易行的自动复位式阻车器,经过一年多全局范围的实际应用,效果很好。该阻车器是一种阻碰式阻车器,其结构如图1、图2所示。     

矿井斜巷防跑车综合保护系统研究设计

设计了矿井斜巷防跑车综合保护系统。该系统主要由阻车器、常开式和常闭式防跑车装置组成,它将常开式和常闭式防跑车装置结合,布置了监控设备和语音报警装置等。实现了失控串车的双重保护、自动联锁和监控报警等综合保护,不仅提升了矿井斜巷串车运输的安全系数,而且保证了井下工作人员的生命安全。     

KHG6—127／B型斜巷防跑车装置

我矿是-５５０～－７２０水平、斜长７９６ｍ、倾角２０°的大斜巷, 提升设备为１台ＪＫ—２．５／２０Ｅ单绳缠绕式提升机,为确保安全生产,安装了一套ＫＨＧ６—１２７／Ｂ型轨道斜巷防跑车装置（常闭式）。 ＫＨＧ６－１２７／Ｂ型防跑车装置是我矿与常熟市煤矿井简专用设备厂联合开发的优化装置,其性能在《煤矿安全现程》对斜巷提或防跑车装置的规定上有所提高,适于３０°以下倾角的斜巷单轨或双轨使用。该装置由脱扣机构、传感器、主控箱、滑轮组、提升机、语音报警显示屏、吸能器和柔性挡车栏等设备组成．平时正常情况下,挡车栏…     

联锁风动吸能式阻车器研制成功

联锁风动吸能式阻车器研制成功由兖州矿业集团南屯煤矿研制的ＬＦＸＺ型联锁风动吸能式阻车器，完全符合《煤矿安全规程》第３４５条的有关规定，是目前斜巷上车场比较理想的挡车设施，有着广泛的推广使用价值。这种阻车器主要由联锁操作台、风缸、吸能弹簧、单道阻车装置...     

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     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。