美卓HP800圆锥破碎机常见故障及处理方法

针对美卓HP800圆锥破碎机常见故障进行了全面、深入的研究,包括机械、液压和电控系统的故障类型,并依据多学科理论如轴承学、流体力学和电子工程,结合实际操作经验,提出了一系列具有针对性和高实用性的解决方案。这些措施有效减少了设备的停机时间,显著提高了整体系统的可靠性和效率,为设备生产的稳定性提供了科学依据,有助于推动相关企业和技术人员在设备管理和维护方面达到更高的工作水平,对矿山设备管理和维护实践具有重要参考价值。

基于ADAMS与有限元联合的露天矿破碎机仿真分析与优化

为了缓解主轴的疲劳破坏程度,提高露天矿环锤式破碎机主轴寿命,以PCH1010环锤式破碎机为研究对象,基于ADAMS对破碎过程进行动力学仿真,得到关键零部件的受力数据;结合名义应力法和疲劳累计损伤原理对环锤式破碎机主轴进行疲劳寿命计算,在保证夹板和圆盘结构强度的前提下,对圆盘和夹板的结构进行优化设计,并根据优化结果对环锤式破碎机主轴总成进行重建。结果表明:重建后的环锤式破碎机主轴最小循环次数为5.6×109次,疲劳寿命提高了60%,主轴总成在运行稳定性方面有明显的改善。

对辊式破碎机运行中常见的故障原因及解决方法

针对物料破碎专用对辊式破碎机,分析了实际生产过程中辊皮的维护和液压系统常见故障产生的原因并提出了解决故障的方法,对此类设备的日常维护和保养具有一定的指导意义。

煤炭大样制备系统技术升级实践探究

煤炭大样制备系统是当前对商品煤人工采样样品进行制备的一种自动化制样系统,在样品制备过程中给料胶带和破碎机容易发生堵煤故障导致制样效率降低,影响煤炭检测结果的时效性。通过对煤炭大样制备系统存在问题进行分析研究,确定在给料仓下料口对应的给料胶带下方增加托辊、给料仓内增加给料搅拌装置、破碎机筛板改为不同孔径的双层筛板。结果表明,技术升级后的煤炭大样制备系统能够制备全水分小于20.0%的煤炭样品,且未发生堵煤故障;经性能试验表明,升级后的煤炭大样制备系统制样精密度符合要求且不存在实质性偏倚,其中灰分差值平均值为0.00%,全水分差值平均值为-0.08%。

Multi-object optimization design for differential and grading toothed roll crusher using a genetic algorithm

Our differential and grading toothed roll crusher blends the advantages of a toothed roll crusher and a jaw crusher and possesses characteristics of great crushing,high breaking efficiency,multi-sieving and has,for the moment,made up for the short- comings of the toothed roll crusher.The moving jaw of the crusher is a crank-rocker mechanism.For optimizing the dynamic per- formance and improving the cracking capability of the crusher,a mathematical model was established to optimize the transmission angleγand to minimize the travel characteristic value m of the moving jaw.Genetic algorithm is used to optimize the crusher crank-rocker mechanism for multi-object design and an optimum result is obtained.According to the implementation,it is shown that the performance of the crusher and the cracking capability of the moving jaw have been improved.

A comparison of strategic mine planning approaches for in-pit crushing and conveying, and truck/shovel systems

In a global environment where energy and labor are becoming increasingly expensive, continuous mining systems such as In-Pit Crushing and Conveying(IPCC) systems have been advanced as offering a real alternative to conventional truck haulage systems. The implementation of IPCC systems in hard rock operations in open pit mines however requires different and more comprehensive planning approaches in order to adequately reflect the practical aspects associated with these. This paper investigates the impact that these approaches may have on the implementation of IPCC systems on a basic metalliferous deposit amenable to open pit exploitation. A strategic life of mine plan to provide numerous economic indicators for each approach is analyzed and compared to traditional truck haulage systems. The mine planning and evaluation process highlights the increased overall resource recovery that may accompany the use of IPCC systems. This investigation also provides insights into the issues associated with IPCC and the scale and type of operation and orebody that is likely to provide a feasible alternative to truck haulage.

Influence of some rock strength properties on jaw crusher performance in granite quarry

The influence of rock strength properties on Jaw Crusher performance was carried out to determine the effect of rock strength on crushing time and grain size distribution of the rocks.Investigation was conducted on four different rock samples namely marble,dolomite,limestone and granite which were representatively selected from fragmented lumps in quarries.Unconfined compressive strength and Point load tests were carried out on each rock sample as well as crushing time and size analysis.The results of the strength parameters of each sample were correlated with the crushing time and the grain size distribution of the rock types.The results of the strength tests show that granite has the highest mean value of 101.67 MPa for Unconfined Compressive Strength(UCS) test,6.43 MPa for Point Load test while dolomite has the least mean value of 30.56 MPa for UCS test and 0.95 MPa for Point Load test.According to the International Society for Rock Mechanic(ISRM) standard,the granite rock sample may be classified as having very high strength and dolomite rock sample,low strength.Also,the granite rock has the highest crushing time(21.0 s) and dolomite rock has the least value(5.0 s).Based on the results of the investigation,it was found out that there is a great influence of strength properties on crushing time of rock types.

Application of analytical hierarchy process to selection of primary crusher

Selection of crusher required a great deal of design based on the mining plan and operation input. Selection of the best primary crusher from all of available primary crushers is a Multi-Criterion Decision Making （MCDM） problem, in this paper, the Analytical Hierarchy Process （AHP） method was used to selection of the best primary crusher for Golegohar Iron Mine in Iran. For this reason, gyratory, double toggle jaw, single toggle jaw, high speed roll crusher, low speed sizer, impactor, hammer mill and feeder breaker crushers were considered as alternatives and capacity, feed size, product size, rock compressive strength, abrasion index and mobility of crusher were considered as criteria. As a result of our study, the gyvratory crusher was offered as the best primary crusher for the studied mine.

Fuzzy TOPSIS method to primary crusher selection for Golegohar Iron Mine(Iran)

Selection of the crusher required a great deal of design regarding to the mine planning. Selection of suitable primary crusher from all of available primary crushers is a multi-criterion decision making(MCDM) problem. The present work explores the use of technique for order performance by similarity to ideal solution(TOPSIS) with fuzzy set theory to select best primary crusher for Golegohar Iron Mine in Iran. Gyratory, double toggle jaw, single toggle jaw, high speed roll crusher, low speed sizer, impact crusher, hammer mill and feeder breaker crushers have been considered as alternatives. Also, the capacity, feed size, product size, rock compressive strength, abrasion index and application of primary crusher for mobile plants were considered as criteria for solution of this MCDM problem. To determine the order of the alternatives, closeness coefficient is defined by calculating the distances to the fuzzy positive ideal solution(FPIS) and fuzzy negative ideal solution(FNIS). Results of our work based on fuzzy TOPSIS method show that the gyratory is the best primary crusher for the studied mine.

Material Flow in Jaw Crusher

Jaw crusher is a kind of machine widely used in mining and aggregates industry,but it still has some shortcom- ings,such as liners wear,terrible power draw etc.The lack of research on material flow strongly limits the design improvement. The size reduction of the jaw crusher relies on the moving jaw movement that is a kind of complicated swing.Based on the move- ment analysis of the moving jaw and the single particle breakage characters,the material flow is analyzed.The measure of the breakage force is carried out.Material flow analysis is partly confirmed by the experimental results and some new information is also learned from the crushing force distribution.The job on the material flow will be helpful to the jaw crusher design improve- ment.

The continuous excavating technique system parameters optimization and economic assessment simulation model in open-pit mine

Based on the fundamental simulation theories and methods, this paper studies such questions as truck dispatching, discrete processing of belt system continuous haulage, belt system interlock, and economic assessment methods. On the basis of above studies, the paper establishes a simulation model for open pit mine semi continuous production technique system. The paper applies GPSS language to construct a simulation program, and the program has been successfully applied in a certain coalmine.

.NET程序汉化一例——Cookie Crusher的汉化

前天,在CNET下载到Cookie Crusher这个软件,发现是.net编写的,按照习惯,先检测程序是否被加壳,结果不错,没加,接着用EXEScope打开主程序,发现资源项目下只有图标和版本这两个东东:

Research on Structural Design of Coal Crusher House in Thermal Power Plant

This paper takes the specific characteristics of pulverized coal room in thermal power plant as the starting point,firstly,this paper analyzes the process layout and structure selection,and then the structural design and vibration design requirements of coal crusher house are introduced in this paper.Finally,based on the engineering example,a new structure form of vibration isolation design is creatively proposed,which provides a new design idea for the practical engineering design.

转载破碎机行走液压系统升级改进

转载破碎机具有结构简单、故障率低等特点,在各矿区得到广泛应用。设备的左、右行走系统由2个操作手柄控制,行走过程中会因动作手柄的幅度大小和液压系统的响应时间等因素,导致左右行走系统不同步,行驶速度不易控制,对设备操作人员和周围人员存在很大的安全隐患。为解决此问题,对行走液压系统进行了升级改进,使设备正常工作时实现低速行走,搬家倒面时为提高工作效率使用高速行走,实现转载破碎机高低速行走的切换,既满足了矿方在工作中安全低速行走的要求,也实现了矿方倒面过程中高速行走的需求。

PLM1000破碎机轴组轴承损坏问题研究分析

破碎机是综采工作面重要的设备,与桥式转载机配套使用,安装在转载机的凹槽前面,主要功能是将煤块在运输过程中破碎至所需大小。由于煤矿工况不稳定,夹矸情况变化无常,经常出现破碎轴组抱死,严重影响生产。通过现场拆检,详细分析了轴组轴承损坏原因,总结出了几种判断办法,并从破碎机设计、制造及使用等方面提出了有针对性的解决方案。

液压落锤式碎石机动力系统配置及能量效率

在研究液压落锤式冲击器工作特性的基础上，提出了定流量和变流量两种可行的液压动力系统配置方案，并对其合理配置途径及能量效率进行了分析和对比，由此计算出实用系列机型的能量效率．研究结果表明，变流量配置优于定流量配置；并且，所研究的液压落锤式碎石机的能量效率不随冲击能的增大而降低．该结论为进一步研制超大型液压落锤式碎石机提供了理论依据．

Numerical Simulation and Optimization of the Gas-Solid Coupled Flow Field and Discharging Performance of Straw Crushers

The quality of crushing,power consumption,and discharging performance of a straw crusher are greatly influenced by the characteristics of its internalflowfield.To enhance the straw crusher’sflowfield properties and improve the efficiency with which crushed material is discharged,first,the main structural parameters influencing the airflow in the crusher are discussed.Then,the coupled gas-solidflowfield in the straw crusher is numerically calculated through solution of the Navier-Stokes equations and application of the discrete element method(DEM).Finally,the discharge performance index of the crusher is examined through detailed analysis of the crushed material dynamics.Additionally,a multi-island genetic algorithm is used to optimize the structure and operational factors that have significant effects on the discharge performance.With optimization,the accumulation rate of crushed materials in the bottom region of the straw crusher decreases by 20.08%,and the massflow rate at the discharge outlet increases by 11.63%.

全液压垃圾破碎机液压系统的设计

本文介绍了全液压垃圾破碎机的液压系统 ,并列出了简单的设计过程 ;分析了采用该液压系统的优点 ,对相关工程设计具有一定的指导意义。

大型露天煤矿他移式破碎站半连续工艺系统优化与应用研究

从我国大型露天煤矿应用他移式破碎站半连续工艺的需要出发,综合运用露天采矿学原理、采矿系统工程、技术经济学和计算机技术等方法,通过调查研究、理论分析和现场工程实践,对露天矿破碎设备选择与结构优化、布置与移设及剥离半连续工艺的应用等内容展开深入研究。论文在总结前人研究成果的基础上,首先对破碎站的分类和各种形式破碎站的概念进行了梳理,以露天矿效益最大化为目标建立了破碎设备二级综合优选模型,并根据剥离半连续工艺应用需要分析了适用于高含水率、易粘结物料的破碎机类型。论文提出了破碎站模块化的观点,以提高设备的布置灵活性、可靠性和国产化率,改善作业环境;并在此基础上建立了受料仓结构参数优化模型。借鉴单斗—卡车工艺车铲匹配研究成果,分析了他移式破碎站半连续工艺下卡车运输的特点,以系统生产成本最低为目标建立了卡车优化模型。根据他移式破碎站布置于露天矿采场内的特点,分析了影响破碎站布置的因素,建立了破碎站位置优化模型与移设优化模型;并通过引入运距增加系数k考虑了下部台阶半连续工艺系统布置对上部台阶运输的影响。根据露天矿剥离应用半连续工艺的需要和他移式破碎站的特点,建立了露天矿半连续工艺服务范围模型、组合台阶开采模型和采掘带宽度优化模型,为剥离半连续工艺系统服务范围和开采参数的确定提供了依据。为适应山坡排土场条件下剥离半连续工艺应用的需要,分析了间断—连续—间断型半连续工艺的环节构成、适用范围和经济效益;为提高露天矿现有带式输送机运输系统的能力利用率,提出了轮斗挖掘机与破碎站共用一套运输系统的联合工艺,并对4种布置方式进行了对比分析。论文通过实例研究对所建立模型的实用性进行了验证。

煤矿破碎机辅助选型系统设计与开发

以提高煤矿破碎机辅助选型效率和降低选型风险为目的,建立了世界主要破碎机厂家参数和具体矿山应用情况数据库,根据煤矿破碎机的产品特点,结合煤矿地质、开采特点、破碎机经济指标等因素,将模块化设计用于煤矿破碎机辅助选型及方案比选系统的开发,实现了破碎机选型,破碎机选型方案比选等功能,对具有相似特点的产品开发具有借鉴意义。