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总结电动铲运机在井下的试用情况。与柴油铲运机相比,电动铲运机的台时产量和台班效率为为柴油铲运机的二倍多,吨矿能耗较柴油铲运机下降1/3,吨矿成本下降1/3强。此外,电动铲运机还具有故障率低,环境污染轻等优点。 相似文献
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在对铲运机的结构和原理进行论述的基础上,详细介绍了进入90年代以来我国铲运机的概况、铲运机的制造情况及50种型号铲运机在我国矿山的分布情况及其在几个典型矿山的使用概况。 相似文献
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充压系统是铲运机先导油路和制动油路的控制装置,充压系统的集成度和性能优劣是反映铲运机先进程度的标志之一,它的功能健全直接体现铲运机制动性能是否可靠,并对维护方式带来一定影响,文章结合梅山矿业公司所用的TORO301D和TORO007的充压原理作了说明。 相似文献
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本文分析整理了世界上主要铲运机生产厂家近几年生产的铲运机主要技术参数,并在计算机上用统计方法得出了斗容或载重量与其它技术参数的近似关系,为铲运机的选型、设计、教学、培训提供参考。 相似文献
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丰山铜矿自80年代初就开始了铲运机应用的试验工作,在生产中取得了较好的效果。本文着重阐述丰山铜矿在国产铲运机运用上的做法及存在的问题,对今后铲运机的与发展提出了建议 相似文献
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自主铲装技术是未来露天矿智能开采的核心环节之一.为提高电铲在自主铲装过程中的工作效率,提出了一种电铲铲装移动路线的优化方法.在已知电铲工作区域的基础上,基于贪婪算法规划出电铲移动次数最少的作业位置集;在给定起始挖掘点的基础上,使用遗传算法生成电铲铲装移动最短路径,并规划每个位置对应的挖掘区域;最后结合电铲作业的相关几何... 相似文献
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电铲是采区主要采掘设备,其弱电控制系统是电铲正常可靠运行的关键。由于雷击或电磁干扰造成弱电控制系统装置的损坏或工作异常等故障,已成为影响电铲安全正常运行的重要因素。针对现有电铲控制系统防雷抗干扰现状、存在的问题及影响,研究了一种新型防雷抗干扰方法,并分析了其在电铲弱电控制系统中的应用和实施效果。实际运行表明,新型防雷抗干扰方法能够有效提高电铲弱电控制系统防雷及抗干扰能力,对电铲及其他弱电控制系统防雷抗干扰的研究和应用具有积极的现实意义,且有着很好的推广价值。 相似文献
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本文从采矿场13m~3电铲台时效率入手,结合现场实际情况以及作者的工作实践,分析了电铲台效与采矿场全员劳动生产率之间的关系,通过现场实际数据以及理论计算方法说明电铲台时效率达不到设计水平造成的劳动生产率下降,文章分析了影响电铲效率的主要原因,指出了提高电铲效率有效途径和方法. 相似文献
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Cable shovel excavators are used for primary production of geomaterials in many surface mining operations. A major problem in excavation is the variability of material diggability, resulting in varying mechanical energy input and stress loading of shovel dipper-and-tooth assembly across the working bench. This variability impacts the shovel dipper and tooth assembly in hard formations. In addition, the geometrical constraints within the working environment impose production limitations resulting in low production efficiency and high operating costs. An intelligent shovel excavation (ISE) technology has been proposed as a potential solution to these problems. This paper addresses the requirements of the dynamic models of the cable shovel underlying the ISE technology. The dynamic equations are developed using the Newton–Euler techniques. These models are validated with real-world data and simulated in a virtual prototype environment. The results provide the path trajectories, dynamic velocity and acceleration profiles, and dimensioned parameters for optimum feed force, torques and momentum of shovel boom-dipper assembly for efficient excavation. The optimum digging forces and resistances for the cable shovel excavators are modeled and used to predict optimum excavation performance. 相似文献
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目前国内大型露天矿山的铲装设备主要是电铲.由于其作业环境恶劣,工作机构极易发生故障.因此,探讨电铲常见故障原因、诊断方法、维护操作对提高电铲作业效率有着极为重要的意义. 相似文献
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RS Bridger N Cabion J Goedecke S Rickard E Schabort C Westgarth-Taylor MI Lambert 《Canadian Metallurgical Quarterly》1997,40(11):1212-1219
Previous studies have suggested that the two-handled (levered) shovel is advantageous over the conventional spade from a biomechanical point of view. The aim of this experiment was to determine whether less energy was consumed while shovelling a load of sand with this shovel compared to a conventional tool. Accordingly, an experiment was designed in which subjects (n = 10) shovelled 1815 kg sand under laboratory conditions using either a conventional or a levered shovel. Heart rate and oxygen consumption were measured continuously during the trial and subjective data on perceived exertion, general fatigue and body discomfort were recorded after the trial. Although total energy expenditure was similar under both conditions (120 +/- 20 and 125 +/- 25 kcal; conventional versus two-handled spade), average heart rate was 4% higher when the two-handled shovel was used (p < 0.05). In addition, the mass of sand per scoop was 4% less with the two-handled shovel (p < 0.05). In conclusion, subjects used similar energy expenditure to shovel 1815 kg sand with the conventional shovel and the two-handled tool despite lower mass of sand per scoop with the latter. This can be explained by the fact that the increased mass of the additional handle compensated for the lower mass of sand per scoop. The higher average heart rate while shovelling with the two-handled shovel can be explained by the more erect posture. 相似文献
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电铲上使用现有除尘通风装置系统已难以满足日益提高的矿山作业现场安全生产环保要求.以2300XPA型电铲除尘通风装置为例,对电铲除尘通风装置原设计中存在的问题进行分析,提出电铲除尘通风装置改造的可行性方案,并组织实施,取得良好的效果.该方案对其他型号电铲除尘装置的改造具有一定的借鉴和指导意义. 相似文献
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20 0 1年下半年 ,济南鲍德汽车运输有限公司 2台 ZL 5 0装载机相继出现了变速箱超越离合器故障 ,导致了大修液力变速箱 ,严重影响了装载机运行的可靠性。本文就液力变速箱的原理及故障现象进行分析 ,并针对主要原因提出预防措施 ,从而使装载机使用可靠性保持较高水平 相似文献