煤矿立井箕斗定重称载系统性能研究

发布时间：2018-10-22 07:39

【摘要】：准确称重和可靠运行是煤矿立井箕斗装载系统升级改造中的关键问题,本文以铜川市王石凹煤矿的液压定重称载系统为研究对象,采用AMESim液压仿真技术,对定重称载过程进行了仿真,分析了影响称重系统性能指标的因素。主要研究内容有:(1)依据定重称载液压系统的工作原理和系统组成,分析得到了称载过程中液压元件之间的逻辑控制关系,建立了 AMESim液压仿真模型。(2)对定重称载过程进行仿真,结果表明液压缸举升速度平稳,装载过程中液压缸活塞较下降位移小,定重称载的称重误差小于0.09%,系统的准确性和刚度符合要求。称载过程中产生的压力冲击小于系统工作压力的1.5倍,系统能够安全工作。(3)建立了衡量称重系统动态性能、测量误差和刚度的指标,分析得到了液压系统管道长度和内径、装载过程对系统性能指标的影响。建立了系统性能指标与管道长度和内径之间的对应关系,为根据系统性能指标选择合适的管道提供了依据。本文建立的定重称载仿真模型,能够实现对该液压系统的仿真与性能分析,得到的研究结论为系统的改进提供了参考依据。
[Abstract]:Accurate weighing and reliable operation are the key problems in upgrading and reforming the skip loading system of coal mine vertical shaft. In this paper, the hydraulic weighing and weighing system of Wang Shi au Coal Mine in Tongchuan City is taken as the research object, and the AMESim hydraulic simulation technology is adopted. The process of constant weight weighing is simulated, and the factors influencing the performance of weighing system are analyzed. The main research contents are as follows: (1) according to the working principle and system composition of the constant weight weighing hydraulic system, the logical control relationship between the hydraulic components in the weighing process is analyzed, and the AMESim hydraulic simulation model is established. (2) the constant weight weighing process is simulated. The results show that the lifting speed of the hydraulic cylinder is stable, the piston of the cylinder is smaller than the falling displacement during the loading process, the weighing error of the fixed load is less than 0.09, and the accuracy and stiffness of the system meet the requirements. The pressure shock produced in the weighing process is less than 1.5 times of the working pressure of the system, and the system can work safely. (3) the dynamic performance, measurement error and stiffness of the weighing system are measured, and the length and inner diameter of the hydraulic system pipeline are analyzed. The effect of loading process on system performance. The corresponding relationship between the system performance index and pipe length and inner diameter is established, which provides the basis for selecting the appropriate pipeline according to the system performance index. The simulation model established in this paper can realize the simulation and performance analysis of the hydraulic system. The research results provide a reference for the improvement of the system.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD531.1

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