国内非公路矿用自卸车发展现状研究

介绍了非公路自卸车种类,国内各种类自卸车主要生产厂家及其产品以及相关的技术来源。分析了国内非公路矿用自卸车的市场现状、发展趋势和发展过程中的主要困难以及当今先进的技术。     

地下自卸汽车主要技术参数选择及设计计算

地下汽车是地下矿山采掘运输的关键设备,应用地下汽车进行较长距离运输已显得越来越重要。它具有动力性能好、通过性强、机动灵活及经济的优势,在国内外得到了广泛的应用。本文对地下自卸汽车设计时主要技术参数的计算和选择进行了分析,对地下汽车的动力传动系统、转向系统、液压系统、制动系统及制动过程进行了详细的研究。为地下自卸汽车的设计提供了理论基础。     

井下运矿卡车的设计原则

井下运矿车和露天矿用自卸卡车虽然同为矿用自卸卡车,但由于其工作环境截然不同,因而两者的设计原则迥异。本文从废气净化,总体结构及参数的确定,机构布置等方面论述了两者的区别,进而阐明了井下运矿卡车的设计原则。     

JZC－10井下自卸汽车液压系统设计

论述了JZC - 10井下自卸汽车液压系统的设计工作 ,尤其对转向液压系统、工作液压系统以及制动系统 (包括LCB弹簧制动器 )作了周密的设计计算 ;着重介绍了弹簧制动器的特点 ,分析了它的工作原理。采用这种最新的制动技术 ,井下自卸汽车的安全性能大大提高 ,满足了矿山安全生产的需要     

Development of express methods for monitoring vibration parameters of operating areas of drivers of open-pit motor transport

Conclusions 1. The currently available methods of monitoring vibrations acting on transport drivers are complicated and require substantial labor and time, which restricts their practical application.2. Two statistically substantiated and fairly informative express methods have been proposed for determining vibration of the operating area of large-capacity open-pit dump trucks. They allow (3–10)-fold reduction of time for getting reliable information about the parameters under evaluation. The method of "maximum values" is applicable for determining vibration of the operating area of drivers of dump trucks BelAZ-548, -549,-75211-75214, 75199, and ND-1200 and provides for vibration monitoring along the vertical component in two modes of movement. The "mathematical relationship" (regression) method gives information about six parameters from measurement of one and is valid for assessing vibration of the operating area of drivers of dump trucks BelAZ-75199, 75211-75214, and ND-1200.3. The proposed methods are promising and can be used to determine vibration of operating areas in other types of open-pit motor transport and to monitor vibration of vehicles and mechanisms for various purposes in mining, coal, and other branches of the industry.Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, Vol. 32, No. 6, pp. 137–142, November–December, 1996.     

154t电动轮自卸车运行状态监测用CAN通信系统的设计与实现

根据矿用电动轮自卸车运行状态监测系统的要求,以TMS320F2812控制器的CAN模块为核心,设计了CAN总线节点模块,实现了主监控器与自卸车控制器之间的实时通信。设计了CAN总线通信系统的硬件电路和软件程序,实现了PC机与DSP主监控器通信协议之间的转换。试验结果表明,该系统性能稳定,传输数据准确。     

Method of Shaping Loading-and-Transportation System in Deep Open Pit Complex Ore Mines

The article presents a procedure to select loading and transportation machines for an open pit complex ore mine. The choice of a shovel–dump truck production system is validated using a statistical testing method (Monte Carlo technique). Stop-watch readings allowed relating the productivity of the production system, degree of ore fragmentation and content of oversizes; the soundness of the choice of the production system based on the revealed criterion was proved. Using the law of the Palm flows, the authors determine the number and sequence of dump trucks for loading in a one-server system.     

830E燃油供给系统误指示分析及改进措施

通过对830E燃油供给系统误指示现象进行分析,发现其根本原因是燃油箱内部隔板设计和安装存在缺陷。从而设计出一套改进方法,从根本上解决此故障的出现。     

Selection of load–haul–dump machines for hard mineral mining in difficult mining and geological conditions

In focus is selection of load–haul–dump machines for hard mineral mines. The authors offer substantiation procedures for tuck-and-shovel systems of mining in difficult ground conditions. In terms of Kyrgaisky Sredni open-cut located in the Erunakovo coal district in Kuzbass, using the Lerchs–Grossman algorithm, the principles and sequence of forming efficient application domains for different specification trucks and shovels within a mine field are presented.     

某露天矿扩能工程主要设备选型

以某露天矿扩能中的采运设备选型为研究对象,通过现场试验、实地调查、矿山经验及理论计算相结合,对露天煤矿扩能后的新增主要采运设备选型进行详尽分析,确定钻机、单斗挖掘机、自卸卡车等主要设备型号和数量的选择。     

自卸汽车液压系统设计

根据作者的设计经验，总结出自卸汽车举升液压系统和转向液压系统的一般设计思路，对设计中的重要环节做了具体说明，给出了常见的比较成熟的液压系统方案。提出应将传统经验性设计方法与现代设计方法结合起来，以弥补经验性设计方法的不足，使液压系统整体性能达到最优或近似最优。     

地下自卸汽车轮边减速器混合离散变量优化设计

应用Pappas法求解地下自卸汽车轮边减速器的混合离散变量优化设计问题时,通过重构优化设计数学模型,合理地确定设计变量,对整数变量进行线性等式约束,引入MAAG制模数等措施,使整个优化设计的离散化过程简化为对模数的离散一维搜索,同时避免了离散点间隔过大可能造成的缺陷,从而提升了优化设计的效率和质量。     

安太堡露天煤矿设备补套方案研究

本文以安太堡露天煤矿过背斜期间的采、运、排设备为研究对象,根据矿里现有采运设备资料数据,结合现场实际与理论计算,对矿山过背斜期间的所需要的设备型号进行了详细分析,确定了自卸卡车等主要设备型号和数量,为矿山正常生产提供了指导。     

Equipment and geology related causes of oil sands lumps and jammed crushers

Mine productivity at oil sands mines can be adversely affected by the presence of large frozen oil sands lumps that jam crushers causing unplanned crusher downtime. Lumpy loads in haul trucks are diverted to lump dumps in the winter to reduce occurrences of crusher jams. This paper documents the problems caused by large oil sands lumps generated by hydraulic and cable-electric shovels using production data linked to climate and equipment performance. Upper benches and the Upper McMurray facies groups were found to be more likely to generate lump dump loads as well as lump jams. Hydraulic shovels were found to generate more loads delivered to a lump dump than cable-electric shovels on a normalized basis. Methods to minimize the occurrence and effects of frozen lumps and ways to improve overall mining efficiency during the winter months are suggested.     

基于仿生学的矿用自卸车车斗结构设计

目前,在年开采量千万吨以上的大型露天矿山运输设备中,非公路自卸车已占80%~90%。作为自卸车承载部件的车斗,因其载重量大,运行环境差,致使车斗寿命缩短。针对目前车斗存在的问题,基于仿生学设计理念,采用等应力框架设计理论和车身轻量化技术,研制出具有自重轻、载重大、强度高、耐磨好、寿命长、油耗低等特点的新型车斗,实现轻量化和节能减排,提高了自卸车的市场竞争力。     

电动轮矿用自卸车轮边三级行星减速器设计

行星齿轮传动具有效率高、传动平稳、抗冲击和振动的特点,在车辆轮边减速系统中被广泛应用。现有的轮边减速器多为一级或二级行星减速,在大吨位电动轮矿用自卸车应用中存在着传动比变化范围有限、影响电动机工作性能,传递扭矩小,轴向空间利用率不高的问题。基于行星传动原理、传递效率以及润滑、密封、呼吸、冷却散热等需求设计了一种新型轮边三级行星减速机构,很好地解决了上述问题,具有实际的工程意义。     

Simulation of Automated Dump Trucks for Large Scale Surface Mining Operations

Large-scale surface mining operations are increasingly employing large-capacity equipment for achieving economic bulk production. Syncrude and Suncor have recently acquired the CAT 797 (380-t rated) for oil sands haulage. The ownership and operating costs associated with these equipment are high, and thus, concrete efforts must be made to achieve reasonable returns on investors’ capital. In order to ensure high operating efficiency, research and technology have focused on automation and robotization applications in truck haulage. Automation and robotization of mining trucks present fundamental challenges in terms of off-highway truck dynamics. In this paper, the authors contribute to the body of knowledge by developing a robotization and stability control (RASC) model for operating dump trucks. The RASC model is developed using the Laplace and transfer functions. A FORTRAN-based simulation program, TRUX, has also been developed to facilitate the simulation and analysis of truck dynamics in the RASC model. The results show that the transfer functions of the front wheel, yaw rate and roll angle performed with respect to steering wheel angle yielded a good indication of automation. Simulated results compared well with test data with a significant peak ratio deviation in the first 5 seconds. Perturbations were observed in 5-20 sec range after which the system achieved stability.     

汽车运输露天矿山柴油消耗分析与管理措施

基于印尼穆印露天煤矿煤岩松软、雨水多、容易陷车和滑坡等情况，系统分析了汽车运输露天矿山在生产环节中采掘、运输、排土3个主要环节节油的着力点，揭示柴油消耗管理与生产技术、生产组织协调、流通过程管理等各方面的关系，分析得出技术节油和管理节油的措施，达到提高技术水平、优化管理措施、增加经济效益的目的。穆印露天矿加强对挖掘机和卡车位置配合、装车质量等的研究，加强道路的维护与监督，实地培训司机的切位、行车和翻卸排土技术，切实做好维修保养工作。根据当地的气候环境特点、生产组织特征，旱季多剥离，雨季少剥离，尽量减少运距，合理组织生产。在油料非正常损耗的管控上，从加油站的进、出、存各个方面进行防控分析，采取了人、机、环境共同防控的措施。     

Ecological risk management in coal mining and processing

The article describes the analysis of theoretical and applied aspects of ecological risk management in terms of coal mining and processing companies, as well as assigns and solves tasks on identification of ecological risks, assessment of probability of undesired events, determination of structure of probable damage, assessment of risk, estimation of technological and organizational methods and measures of influence on ecological risk to reduce and avoid it, and decision-making on practical introduction of particular risk management and control measures. The groups of technological and organizational measures aimed to minimize or neutralize risks are considered. The key result of the research is the package of measures of ecological risk reduction, in particular: technologies of ultradeep purification of dielectric liquids; introduction of processing equipment for used-up tyres of heavy open pit dump trucks; formation and updating of quality management system; improvement of efficiency of reclamation of disturbed lands; treatment of hydraulic mining and coal processing waste.     

堆浸矿堆溶液渗流规律初探

溶液渗流规律对堆浸技术的浸出率、浸出速率具有很重要的影响。堆浸矿堆可划分为矿石颗粒、空气、不可动溶液和可动溶液,矿石颗粒是组成矿堆的骨架,颗粒表面吸附作用和表面张力是促使溶液进入矿堆的重要因素,在非饱和渗流状态下,矿堆相对渗透率与饱和度有关。矿堆中颗粒尺寸小的区域渗透系数小,导致最大极限流速小,易达到局部区域饱和渗流,随着喷淋强度的增大,饱和区范围逐渐扩大,直至整个矿堆达到饱和渗流。采用假想渗流代替实际渗流,推导了溶液渗流的基本方程。