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液压传动系统具有许多优点,所以得到了广泛的应用。但液压传动系统出现故障时又很令人挠头:液压传动出现故障的原因不易查找,很难分析和排除。本文仅仅针对再起一个液压传动故障问题的处理和解决,分析了一下原因,望有助于液压系统故障的分析和处理。 相似文献
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本文以减少液压传送系统故障以及确保液压传动系统正常运行为出发点,在对液压传动系统泄漏现象产生的原因作出分析的基础上,对液压传动系统泄漏问题的控制措施进行了研究与探讨。 相似文献
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液压传动系统的运作原理和常见故障处理及维护 总被引:1,自引:0,他引:1
首先从液压传动系统的组成、工作原理、优点及运用等4个方面,介绍了液压传动系统的基本原理和实践运用情况,然后围绕液压传动系统常见故障和排除方法,介绍了液压传动系统故障分类、液压传动系统故障的诊断,对液压传动系统6类常见具体故障的原因和排除方法做了具体阐述,最后对液压传动系统的科学使用与维护提出了具体措施。 相似文献
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介绍了基于PLC的板料液压剪切机的主机结构、液压传动系统和PLC自动控制系统的设计。重点阐述了PLC自动控制系统的设计,给出了相应程序的状态转移图和外部接线图。在现场生产中系统工作性能稳定。 相似文献
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利用AutoCAD2000的高级制定功能,进行二次开发,建立了一套用于绘制液压系统原理图的图形符号库,并介绍了液压元件符号库的建立过程,从而简化了液压原理图的绘图过程,提高了绘图效率。 相似文献
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基于Simulink和LabVIEW的液压转盘机构运动学仿真 总被引:1,自引:0,他引:1
提出了一种新型的液压转向系统,此系统用于转向轮距较小的场合。利用Simulink对液压转盘机构进行运动学仿真,得出液压缸各运动参数随时间及转盘转角的变化曲线。运用LabVIEW图形化程序语言设计出液压转盘机构运动学数字仿真界面,方便、准确地显示液压缸的运动情况。 相似文献
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绘制液压回路图的软件与方法很多,CAD软件是其中的一种。为快速正确地绘制液压回路图,设计出合格的液压系统,熟练地应用计算机绘图CAD软件是十分必要的。本文以一液压基本回路图为例,深入描述了CAD软件在绘制液压回路图时的应用及以利用液压回路的特性,快速绘制液压回路的方法与技巧,大大提高了液压回路的设计效率。 相似文献
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Realistic 3D-animation is used in all motion simulation systems of mechanisms and other mechanicals systems. It provides a high-quality illustration of time processes, but it has a weak capability for analysis of their dynamics, for simultaneous display of contact interaction and functioning of mechanisms of different motion types. A spacecraft docking is characterized by a complex contact interaction of docking assemblies with mechanisms and devices of different motion types. Integration and time synchronization of the animation, plots and numerical values greatly facilitates the understanding of dynamics features of these processes. Usage of simple wireframe graphical models allows displaying all contact points. A changing of the set of graphical elements focuses attention on major events of a simulated process. Graphical models developed with consideration of these features and used for spacecraft docking simulation analysis are called dynamic diagrams and described in this paper. 相似文献
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A new approach is proposed to the geometric synthesis of noncircular gears for a rotary hydraulic machine. The corresponding procedure employs universally available mathematical software and standard graphics programs. 相似文献
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针对起重机液压缸变幅机构的设计计算,运用多目标优化设计方法进行理论分析并建立数学模型,采用黄金分割一维搜索优化计算方法,在DELPHI平台上构架参数计算软件,程序根据输入已知参数按照优化流程进行液压缸参数优化计算,以图形示意的方式显示计算结果,并保存结果和数据输出。采用DLEPHI平台构建的起重机液压缸变幅机构计算软件具有专用性强、运算效率高等优点,可大幅减少设计人员的工作量,提高设计效率和准确性,对起重机变幅机构及其部件设计具有现实指导意义。 相似文献
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The aerodynamic braking is a clean and non-adhesion braking, and can be used to provide extra braking force during high-speed emergency braking. The research of aerodynamic braking has attracted more and more attentions in recent years. However, most researchers in this field focus on aerodynamic effects and seldom on issues of position control of the aerodynamic braking board. The purpose of this paper is to explore position control optimization of the braking board in an aerodynamic braking prototype. The mathematical models of the hydraulic drive unit in the aerodynamic braking system are analyzed in detail, and the simulation models are established. Three control functions--constant, linear, and quadratic--are explored. Two kinds of criteria, including the position steady-state error and the acceleration of the piston rod, are used to evaluate system performance. Simulation results show that the position steady state-error is reduced from around 12-2 mm by applying a linear instead of a constant function, while the acceleration is reduced from 25,71-3.70 m/s2 with a quadratic control function. Use of the quadratic control function is shown to improve system performance. Experimental results obtained by measuring the position response of the piston rod on a test-bench also suggest a reduced position error and smooth movement of the piston rod. This implies that the acceleration is smaller when using the quadratic function, thus verifying the effectiveness of control schemes to improve to system performance. This paper proposes an effective and easily implemented control scheme that improves the position response of hydraulic cylinders during position control. 相似文献