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1、武汉科技大学本科毕业设计I摘 要设计中介绍了结晶器液压振动系统，系统通过输入正弦电信号给伺服阀，进而控制液压缸的正弦振动。设计过程中系统的分析了系统的工作状况，以及在该工作状况下所系统所要达到的工作要求。设计中针对系统中的液压泵，伺服阀，液压缸等主要元件的选型进行了详细的计算。在泵站的设计中，核心部分是泵，油箱以及蓄能器的设计计算与选型，三者的关系是相互影响的，同时，液压系统也受外在因素的诸如工作环境和工作温度的影响，这些影响对系统的影响是非常大的，这个因素考虑的不全面直接影响到系统的工作性能。在系统的各个参数计算中，根据设计内容所给出的条件，计算出系统液压缸的位移振动曲线。根据振动曲线方程可
2、以求解出系统所需的最大流量，根据计算的结果确定整个系统的工作状况。系统泵的驱动功率的计算，按照在系统振动过程中各个工况条件下所需功率的平均值，正弦振动的平均速度可以通过正弦振动方程计算出。设计中的大部分元件都是通过相关参数的计算，根据产品的样本经行选型，以达到系统的要求。关键词： 结晶器； 液压伺服系统； 激振； 正弦振动武汉科技大学本科毕业设计IIAbstractThe system of hydraulic vibration system for crystallizer was introduced in the design,To control the sinusoidal vib
3、ration of the cylinder, the sinusoidal signal is input into the servo valve by the computer .In the design, the working conditions is analysed,and the requirements of the system under this conditions is also analysed. For the design of the hydraulic system, the pump,servo valves, hydraulic cylinders
4、 and other major components of the Selection are detailed calculated .In the design of the pumping station, the core are calculation of the pump, storage tank of the design and selection, the relations among each other are impacted, at the same time, The hydraulic systems are also impacted by extern
5、al factors such as the working environment and temperature The impact of these effects on the system is very great, if this factor is not taken into consideration, There will be direct impact on the performances of the system.The various parameters of the system is calculated according to the conten
6、ts of the conditions, and we can calculate the displacement vibration curve of the hydraulic cylinder of the system. According to vibration curve equation,we can work out the most flow of the system , And determine the working conditions according to the results of the whole system.The calculation o
7、f the pump-driven power of the system is the average of the power required in the vibration of the system under the working conditions. And the sine vibration equation can be calculated. The most components are selected through the calculation of the relevant parameters, based on a sample of the pro
8、ducts selection, to meet the system requirements.Key words: Crystallizer; Hydraulic servo system; Exciting vibration; Sinusoidal vibration武汉科技大学本科毕业设计III目 录前 言 .11 系统设计方案确定 .21.1 伺服系统设计方案.21.2 控制方案.21.3 主要技术参数.21.4 系统工作情况分析.32 设计计算 .32.1 系统振动.32.2 液压缸设计计算.42.2.1 油缸的设计原则 .42.2.2 油缸的选型 .42.2.3 油缸参数计算
9、.52.3 泵的选择计算.62.3.1 泵的选择计算原则 .62.3.2 系统流量计算 .62.3.3 流量计算 .62.3.4 泵的参数计算 .72.4 液压泵的驱动功率及电机的选择.72.4.1 驱动功率计算 .72.4.2 电动机的选择 .82.5 阀的选择计算.82.5.1 伺服阀的选取 .82.5.2 液控单向阀的选取 .92.5.3 电磁换向阀的选取 .93 辅助元件的选择计算 .103.1 管路.103.1.1 壁厚的计算 .103.1.2 内径计算 .113.1.3 软管 .123.1.4 管接头 .12武汉科技大学本科毕业设计IV3.2 油箱的设计计算.123.2.1 油箱设计原则 .123.2.2 油箱参数设计计算 .133.2.3 油箱容量的计算 .133.2.4 油箱内工作介质体积估算 .143.3 系统发热功率计算.143.3.1 液压泵的功率损失 .143.3.2 阀的损失功率 .143.3.3 管路以及其它功率损失 .153.3.4 系统总的功率损失 .154 溢流阀的选取 .154.1 溢流阀的作用.155 过滤器的选择 .
