GYL200G型轮式挖掘机支腿故障一例

GYL200G型轮式挖掘机采用高压变量泵配变量马达驱动、两挡液力换挡变速器、弹性悬挂装置和独特的折叠臂等先进技术，具有重心低、平顺性好、行驶速度快、整机安全可靠和作业效率高等特点。该机一般不易发生故障，但如果不加强维护保养或不严格按照操作规程使用，也会出现一些故障。某部在组织训练时，出现支腿不能将车支起的问题，现将其具体故障现象、原因分析、检测诊断及排除方法归纳如下，供同行参考。     

为你铸就卡特彼勒将在中国生产轮式挖掘机

Caterpillar（卡特彼勒）携8款产品亮相BICES2013。8款产品中包括了为适应中国工况需求而设计的履带式液压挖掘机、轮式挖掘机、装载机等。这些产品将助力卡特彼勒在中国市场的成长，更好地满足中国客户的实际需求。卡特彼勒围绕“为你铸就”的主题，简洁现代的展场设计，全方位的展示和专业的工作人员，诠释卡特彼勒对品质、服务和创新的追求。     

徐工XE150W轮式挖掘机

轮胎式液压挖掘机因其具有机动灵活，施工效率高，可自行快速转场，配置多种作业机具，适应性强等优势，非常适合在城市和空间狭小的施工场地作业。在欧美等发达国家一直备受青睐，近年来随着我国城市化建设进程的不断加快，旧城改造和新城开发的不断增多，轮胎式液压挖掘机的需求量在逐年增加，在未来几年将有很大的市场发展空间。徐工挖掘机械有限公司针对轮胎式液压挖掘机的上述特点和优势，     

轮胎式液压挖掘机制动系统设计

轮胎式液压挖掘机作为能够快速转场的挖掘设备,因在公路行驶,其制动系统的设计可靠性及安全性对挖掘机的安全操作至关重要。在徐工挖机轮胎式液压挖掘机的系列化设计过程中,总结出一套轮胎式液压挖掘机制动系统设计的理论经验。轮胎式液压挖掘机采用两桥设计,四个车轮。制动器为湿式油冷盘式制动,理论和结构设计完全符合GB／T21152-2007标准要求。     

16t轮胎式挖掘机制动限速降挡控制

1 行星式动力换挡变速箱的结构传动原理及降挡限速要求 目前用于轮式液压挖掘机的行星式动力换挡变速箱有多种结构型式,如ZF公司的ZHL系列、O&K公司的M96型等.图1所示为一种用于国产16t轮式液压挖掘机上的行星式动力换挡变速箱.图中太阳轮1经花键套与液压马达3相连,内齿圈4的内外圆都有花键齿,经内外多盘离合器5和6分别与花键套2和壳体7结合或分离,在内齿圈4和太阳轮1之间有3个行星轮8分别安装在行星架9的3个轴伸上,与内齿圈和太阳轮啮合,行星架为该行星变速轮系的输出端,它再经过齿轮10、11、轴12分别传动前后桥,驱动整机行驶.     

Eco-economic excavator configuration method

Excavating processes performed frequently in building, civil and infrastructure projects are critical and costly. To define a cost-effective excavator configuration, an earthwork planner depends mostly on experience and intuition. This intuitive reasoning is often error-prone, and highly experience based. This paper presents a computational method called the Eco-Economic Excavator Configuration (E3C), which selects the most favorable configuration of a heavy duty excavator according to the earthwork package and its job conditions. E3C obtains the input data from external databases, derives the formulae involved in computing the process performance (e.g., production rate, process completion time, and profit), and instructs the earthwork manager in the best-fit excavator configuration (e.g., maximum digging depth, engine size in HP, and bucket size) for profitable operation by considering the implicit constraints and conditions exhaustively. The method identifies the best-fit PDFs of the process completion time and that of the total profit, given an excavator configuration. A test case, which was performed at a building basement excavating project, confirmed the usability and validity of the method.     

轮式挖掘机动臂升降迟缓无力故障诊断与排除

JYL200G型轮式挖掘机采用高压变量泵配变量马达驱动、两档液力换档变速器、弹性悬挂装置和独特的折叠臂等先进技术,具有重心低、平顺性好、行驶速度快、整机安全可靠和作业率高等特点。该机一般不易发生故障,但如果不严格     

关于液压衬砌台车调整架的改进

探讨了液压衬砌台车原调整架,结构及存在的问题,提出了调整架结构改进方案,并进行了理论分析,指出调整架改进后活动底座可以轻松移动,既省时又省力,使用效果良好。     

浅谈挖掘机液压油路系统的维护方法

针对挖掘机液压系统,根据实际经验总结了挖掘机液压系统维护的方法,主要阐述了液压油的更换工艺、步骤和注意事项,以保证挖掘机液压系统的安全、可靠,从而确保挖掘机的工作效率.     

Virtual operator modeling method for excavator trenching

This research investigated how machine operator expertise, strategies, and decision-making can be integrated into operator models that simulate authentic human behavior in construction machine operations. Physical prototype tests of construction machines require significant time and cost. However, computer-based simulation is often limited by the fidelity in which human operators are modeled. A greater understanding of how highly skilled operators obtain high machine performance and productivity can inform machine development and advance construction automation technology. Operator interviews were conducted to build a framework of tasks, strategies, and cues commonly used while controlling an excavator through repeating work cycles. A closed loop simulation demonstrated that an operator model could simulate the trenching work cycle with multiple operator strategies, and adapt to different vehicle and work site settings. A virtual operator model that captures human expert behaviors can be used to assess vehicle characteristics and efficiency, and inform the design of automation systems.     

擦窗机伸缩臂接触应力分析

为了解擦窗机伸缩臂与滚轮接触部位的应力变化,基于Hertz接触理论对擦窗机的伸缩臂与滚轮进行了接触分析,导出了接触应力函数以及滚轮尺寸设计的公式,并通过软件模拟出应力变化与接触位置以及材料泊松比的关系变化曲线.针对无锡宝能大厦CWGS250型轨道式擦窗机进行理论分析,计算出实际受力,并进行相应的有限元计算,对两种方法得出的结果进行分析比较.结果表明本文的理论方法合理可靠,可以作为擦窗机设计的理论计算方法.