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1.
液压元件的质量是液压系统可靠工作的核心基础,因此对液压元件进行性能检测,对于减少后期设备故障,并为故障分析提供相关依据具有重要意义。拟定了检测系统的整体测试原理方案,液压元件检测系统公称压力为32MPa,测试压力为32MPa,公称流量为160L/min。对该试验台各个组件进行了选型和装配设计,包括各个集成块单元组件的装配设计,最终完成了液压元件检测试验装置中各个集成块、泵站及检测台台架、被试阀阀板等系统检测单元的总体装配设计。在具体方案实施中采用了二维设计与三维设计相结合的方式,以二维设计为主,三维模拟设计为辅,完成了对液压元件检测装置的结构设计。  相似文献   

2.
装载机液压系统整机性能台架试验,是将装载机元件的台架试验与机载试验进行整合,在实验室内实现装载机整机液压系统(包括泵、阀、缸、油箱、管路和接头等)动载模拟试验。其主要目的是检测整个液压系统的性能参数,可优化和筛选最佳的装载机液压系统方案,研究和验证装载机液压系统的内在性能,为装载机液压系统的开发和改进提供科学准确的试验依据。  相似文献   

3.
各种液压元件,特别是泵、马达、液压缸、阀在制造或修理完了时,都要进行测试,目的是了解液压元件的质量,保证产品寿命,这是非常重要的一环。在液压元件中最主要的元件还是液压泵与液压马达。而它们的测试中最主要的项目又是应用各种液压试验台进行压力、流量、扭矩和转速的测试,快速高效准确地检测各种液压元件的参数大小和性能特征,达到区分液压元件质量好坏,寿命长短。进而判断液压元件可否正常稳定的使用。  相似文献   

4.
一个完整的液压系统由五个部分组成,即动力元件、执行元件、控制元件、辅助元件和液压油。动力元件的作用是将原动机的机械能转换成液体的压力能,指液压系统中的液压泵,它向整个液压系统提供动力。  相似文献   

5.
液压阀是构成液压系统的重要元件之一,为了便于加工制作或与液压系统其他元件联接,它的阀体上常常加工有起密封作用的圆锥内螺纹,这些圆锥内螺纹的加工精度直接影响液压阀产品的性能和质量。  相似文献   

6.
王军  魏来生 《机械设计》2005,22(Z1):279-280
建立机械系统与液压系统之间相互作用的模型,对机械液压系统进行了联合仿真.利用ADAMS液压系统模块建立液压系统回路的框图,然后将其连接到机械系统模型中,选取求解器分析整个系统的性能.得到了系统机械部件和液压元件的性能曲线.对ADAMS液压模块使用中需要注意的一些问题作了介绍.  相似文献   

7.
液压系统工作性能的优劣与液压元件性能和质量及液压系统的结构有关。用双级换向阀组合的逻辑回路,所用元件的品种和数量以及外接管路数少,系统的结构简单紧凑,且能逻辑组合出多种滑阀机能。  相似文献   

8.
开发了多功能液压元件测试台,以满足15吨卡车上的各类液压元件的质量测试工作。测试台构思新颖,布局合理,操作方便,并用计算机进行数据采集、处理、打印,软件包可以画出相应的液压回路图、有汉字处理性能及良好的人机交互界面。  相似文献   

9.
以VC 6.0为基本工具,采用面向对象的原理和技术,建立了超高压液压元件试验台的计算机辅助测试系统.在选择高性能的硬件和设计稳定可靠的测控软件基础上,实现了液压元件最高压力70 MPa的性能检测的要求.试验表明系统稳定、可靠、安全和经济.  相似文献   

10.
为了进一步提高掘进机质量、降低液压系统故障率,需设计一种可用于泵、阀、马达、油缸等液压元件检测、冲洗多功能装置。一方面,可以准确检测、掌握各液压元件的实际参数;另一方面,可以作为车间的液压元件冲洗设备使用。本文中提出了掘进机液压元件检测、冲洗多功能装置的主要技术指标,通过理论计算,确定了该装置的泵、阀、马达、油箱的参数,为下一步的选型、采购工作打下了基础。  相似文献   

11.
An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...  相似文献   

12.
The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...  相似文献   

13.
黑棣  郑美茹 《机电工程》2016,(11):1315-1321
针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。  相似文献   

14.
The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.  相似文献   

15.
The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....  相似文献   

16.
The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...  相似文献   

17.
马立新  王宏宇 《机电工程》2015,32(1):118-122
针对传统的电力系统多目标粒子群优化算法采用权重系数法将多目标转化为单目标,从而忽视了各目标函数间的竞争关系这一问题,提出将非支配解提取法运用到电力系统多目标无功优化中,并设定了一套提取规则,以电力系统中的有功网损、电压偏差和电压稳定裕度为目标,使目标在充分竞争的情况下得出Pareto最优解,利用IEEE-14节点系统对多目标非支配解提取法的电力系统无功优化进行了仿真测试。研究结果表明,该算法一次运行可以得出多组非支配解,既有偏向单个目标的解也有兼顾所有目标的解,克服了权重系数法的盲目性和单一性,可使电力决策者根据实际问题选择最优解,具有较好的灵活性与多样性。  相似文献   

18.
A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.  相似文献   

19.
This article describes designing, implementation and tuning processes of multiple-tapped-delay-line (MTDL). Obtained MTDL can be implemented in various field-programmable-logic-devices (FPGA) devices and applied for time-to-digital-converters (TDC) construction. The task of tuning process is the tapped-delay-line (TDL) linearisation, and consists of two stages. The first stage depends on selecting an appropriate configurable-logic-block (CLB) for particular delay-segment realization and selecting proper connection between these blocks. The second tuning stage, that is essential from this article viewpoint, depends on inter CLBs connecting wires delay regulation realized directly by load regulation. The Load regulation depends on connecting an appropriate number of unused three-state-buffers or CLB inputs to the wire which delay is adjusted. Depending on the number of inputs connected to the wire its capacitance changes that influences its time-constant and finally changes its time-delay.The MTDL mathematical model, obtained characteristics and results of time-interval (TI) measurements are also presented. The derived TDL model provides information about how the particular wire delay should be changed and in which order the changes should be executed. This makes the designing process predictable and easy to carry out. Presented characteristics confirm the proper operation of presented linearisation technique. The proper operation of the whole measuring module is confirmed by obtained TIs histograms presentation.  相似文献   

20.
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