钢丝绳芯胶带及硫化胶结技术在安钢2 200 m3高炉的应用

介绍了钢丝绳芯胶带在安钢2 200 m3高炉上料主带式输送机中的应用及在INBA法炉渣处理系统中替代普通帆布胶带的效果,并简单概述硫化胶结技术的在安钢应用特点及具体措施.     

钢丝绳芯输送带接头硫化工艺技术及应用

钢丝绳芯输送带是矿业工程矿物输送过程中的重要基础设施之一,钢丝绳芯输送带的接头硫化质量,直接影响输送带的正常运行和使用寿命。详细介绍了太平矿业公司钢丝绳芯输送带在二期工程破碎系统运行的现状,分析了钢丝绳芯输送带接头硫化工艺及存在的问题,并对其工艺进行技术改进,优化了接头的制作方法,在硫化胶料中加入炭黑,提高了输送带的生热、阻尼性能。现场应用效果较好,缩短了硫化时间,延长了输送带的使用寿命,降低了安全隐患风险,达到了降本增效的目的。     

带式输送机胶接头的改进

德兴铜矿泗洲选矿厂碎三工段带式输送机改造中 ,选用 4段各 4 0 0mm胶接头取代原用的 5段各2 5 0mm胶接头 ,通过生产实际应用证明改进后的胶接头使用寿命较原来有大幅度增加     

基于捷径重试规则晶圆带式搬运系统性能优化

开口管桩由于其承载力高、质量可靠、施工方便等优点得到越来越广泛的应用.土塞的生成使得开口管桩沉桩阻力不同于闭口管桩, 不仅包括桩外侧摩阻力、桩端阻力, 桩内侧摩阻力亦是其重要组成部分.针对开口管桩沉桩受力特性, 采用自主研发的大尺度模型试验装置, 进行不同桩靴形式下开口管桩的贯入试验, 并与闭口管桩进行对比分析.研究表明, 开口管桩随沉桩深度的增加趋于闭塞, 沉桩阻力随沉桩过程基本呈线性增加, 桩内、外侧单位摩阻力均存在“侧阻退化”效应; 桩体贯入时桩周地表隆起量随径向距离增加逐渐减小, 隆起速率随沉桩深度增加逐渐变缓, 桩周土影响范围约为5 ~ 7倍桩径; 桩靴对开口管桩土塞生成、沉桩阻力和挤土效应均有重要影响, 内30°桩靴土塞生成高度、桩内侧摩阻力及其所占总沉桩阻力比例最大, 桩周土地表隆起量最小, 外30°桩靴与内30°桩靴情况相反, 直角桩靴居中; 闭口管桩沉桩阻力、外侧摩阻力与挤土程度均大于开口管桩.      

高位通廊带式输送机换带方法

包钢巴润矿业分公司为安全快速完成高位通廊带式输送机换带工作,紧密结合输送机现场布置实际,通过理论计算分析,提出了一种全新的高位通廊输送机换带方法,依靠输送机驱动装置,辅助以工程车辆,低速运转输送机,利用旧带导出新带,喂入新带同时导出旧带,然后硫化胶接新带。     

带式输送机输送带磨损及防范措施

通过对带式输送机输送带磨损形式的分析,在带式输送机的设计中采取相应的措施,来防范输送带的过快磨损,以延长带式输送机的运行寿命。     

带式输送机防跑偏技术

论述带式输送机跑偏的主要因素、危害以及如何检测,提出了诸多防止输送带跑偏的措施和跑偏自动调正装置。以根据工作制度、工况情况选用适宜的防跑偏技术。     

Theoretical modelling of an isokinetical steel feeding system for near-net-shape strip casting

During near-net-shape casting as considered here, liquid steel in thicknesses between 5 and 15 mm has to be put onto a cooled belt recirculating with speeds of 30 to 60 m/min. On the belt the liquid steel solidifies, before it can be subjected to one or two in-line hot deformation steps. The requirement that the surface and the shape of the strips should already have the best possible structure upon being cast means that high demands are placed above all on the liquid steel feeding system. Especially the liquid metal should ideally be cast with the lowest possible turbulence and at a casting speed which is equal to the speed of the conveyor belt or cooled conveyor belt. In other words, the relative speed between the cast liquid and the cooled conveyor should become “zero” in order that the cast liquid can be more or less “laid” onto the cooled conveyor (known as isokinetic feeding). Different kinds of feeding liquid metals onto a circulating belt are reported with main emphasis on the theoretical modelling of the so-called underpressure feeding systems. It is shown that, on the one hand, the casting speed can be regulated independently of the input mass flow rate into the tundish and, on the other hand, the liquid can be accumulated in the tundish or discharged from it at constant casting speed.     

煤输送过程的计算机控制策略

介绍一种先进的由计算机对输送粉状物料的皮带机系统进行控制的方法。该系统由输送作业计划编制和作业的系统运转控制两大功能软件组成。通过操作工输入的“目标输送量”计算和优化皮带系统的运行过程,减少了皮带机的启动和停止,提高了皮带系统的生产效率和自动化水平。现已经应用于宝钢炼焦厂的备煤生产中。     

铁合金电炉上料系统在工程中的设计与应用

分析了铁合金电炉料车斜桥上料与带式输送机上料的优缺点。系统介绍了波状挡边输送机应用于铁合金电炉上料系统中所具有的上料能力大、能耗低、节省占地面积等工程优势及波状挡边输送机的相关设计计算方法和计算公式，指出了波状挡边输送机是替代斜桥料车的新型上料方式，对大中型电炉和中小高炉料车斜桥上料系统的技术改造具有重要意义。     

皮带机功率的简易计算方法

本文简要介绍了皮带机的布置形式,通过分析皮带机传动滚筒轴的组成结构,提出了皮带机传动滚筒轴功率的简易计算方法,该计算方法简单明了,易于掌握,为皮带机的设计提供了有效的参考方法。     

现代大倾角输送技术与托容式输送机

本文简述了带式大倾角输送技术的现状，并介绍了双带托容式输送机。     

皮带自动纠偏装置在铜冶炼备料车间的应用

皮带输送机作为有色冶炼原材料的主要输送设备，它的正常平稳运行关系着整个生产系统的安全稳定运行。但皮带的跑偏一直是皮带输送机运行中主要出现的故障，而且由于很多方面的原因很难调整 ；后经过仔细分析研究，设计出一套皮带自动纠偏装置专门用来调整皮带的跑偏，实际使用效果非常好。     

无人值守在巴润选矿破碎系统的应用

结合破碎区域现有胶带机的运行情况,设计了一种皮带机无人值守综合保护系统。通过分析皮带机的常见故障类型,确定了皮带综合保护的检测方法及连锁保护,实现了对皮带机故障的实时检测和综合判断,降低了故障扩大化的可能性。下料小车自动布料系统中,创新性引人激光测距仪对布料小车进行定位与控制,实现无人值守。     

影响带式输送机跑偏的因素与调整方法

分析带式输送机在安装和使用过程中产生跑偏的原因,介绍生产中常用的几种带式输送机跑偏的调整方法。     

带式输送机跑偏的原因及解决方法

分析了带式输送机在安装和使用过程中产生跑偏的原因,介绍了几种在生产过程中常用的带式输送机跑偏的解决方法。     

高炉运上料皮带机的安装与调试

介绍了鞍钢新2号、新3号高炉运上料皮带机安装与调试的程序和方法,总结了科学、高效安装皮带机的经验,并对皮带机调试运行过程中的跑偏现象进行了研究,提出了快速诊断、调整的方法.     

钢网骨架耐灼烧带在烧结矿输送中的应用

分析了造成八钢烧结成品矿输送胶带机故障率高、寿命短的原因,使用了抗撕裂钢网包裹钢丝绳芯钢网骨架体结构、抗灼烧覆盖胶的钢网骨架耐灼烧输送带,具有纬向强度高、抗撕裂性能、表面抗灼烧的特性,改善了烧结成品矿输送胶带易灼烧、撕裂的现状,降低成品胶带机故障率,大幅提高了成品胶带机的使用寿命.     

精矿胶带输送机卸料方式的改进实践

介绍了精矿输送胶带运输机卸料部分结构的改进,将原胶带运输机卸料部分的卸料斗改为抛料胶带运输机的卸料方式,杜绝了下料斗堵料、粘料的故障,并有利于后续工序的抓斗取料作业。     

Frequency Response of Flag-Shaped Single Degree-of-Freedom Hysteretic Systems

Recognizing the importance of limiting residual deformations that are usually associated with the response of full hysteretic systems under seismic loading, a number of energy dissipating devices and innovative structural systems exhibiting a full recentering response have recently been developed. Although these systems encompass the highly desirable self-centering characteristic, they inherently have less energy dissipation capacity when compared to more traditional fuller hysteretic systems. Little information is available on the nonlinear dynamics of systems exhibiting this flag-shaped hysteresis. In this paper, the frequency response of single degree of freedom (SDOF) systems exhibiting the flag-shaped hysteresis is computed in a closed form using the method of slowly varying parameters. The solution is derived for two independent variables representing the postyielding stiffness and energy dissipation capacity that define all self-centering hysteretic systems. The hysteretic systems covered by this formulation range from bilinear elastic systems (with no energy dissipation) to full bilinear elastoplastic. The frequency response exhibits a softening branch with multiple solution regions. A relationship between the system properties and bounded response at resonance for a given amplitude of excitation is also derived. Further analysis is carried out to assess the stability of these multiple solution regions. It is found that both stable solution branches can be achieved depending on the nature of the excitation. An amplitude jump phenomenon is also present both in increasing frequency and decreasing frequency sweeps. The concept of theoretical versus likely response curve is discussed for less idealized excitation functions.