【正文】
武漢科技大學(xué)本科畢業(yè)設(shè)計(jì)摘 要 設(shè)計(jì)中介紹了結(jié)晶器液壓振動系統(tǒng),系統(tǒng)通過輸入正弦電信號給伺服閥,進(jìn)而控制液壓缸的正弦振動。設(shè)計(jì)過程中系統(tǒng)的分析了系統(tǒng)的工作狀況,以及在該工作狀況下所系統(tǒng)所要達(dá)到的工作要求。設(shè)計(jì)中針對系統(tǒng)中的液壓泵,伺服閥,液壓缸等主要元件的選型進(jìn)行了詳細(xì)的計(jì)算。 在泵站的設(shè)計(jì)中,核心部分是泵,油箱以及蓄能器的設(shè)計(jì)計(jì)算與選型,三者的關(guān)系是相互影響的,同時(shí),液壓系統(tǒng)也受外在因素的諸如工作環(huán)境和工作溫度的影響,這些影響對系統(tǒng)的影響是非常大的,這個(gè)因素考慮的不全面直接影響到系統(tǒng)的工作性能。 在系統(tǒng)的各個(gè)參數(shù)計(jì)算中,根據(jù)設(shè)計(jì)內(nèi)容所給出的條件,計(jì)算出系統(tǒng)液壓缸的位移振動曲線。根據(jù)振動曲線方程可以求解出系統(tǒng)所需的最大流量,根據(jù)計(jì)算的結(jié)果確定整個(gè)系統(tǒng)的工作狀況。 系統(tǒng)泵的驅(qū)動功率的計(jì)算,按照在系統(tǒng)振動過程中各個(gè)工況條件下所需功率的平均值,正弦振動的平均速度可以通過正弦振動方程計(jì)算出。 設(shè)計(jì)中的大部分元件都是通過相關(guān)參數(shù)的計(jì)算,根據(jù)產(chǎn)品的樣本經(jīng)行選型,以達(dá)到系統(tǒng)的要求。關(guān)鍵詞: 結(jié)晶器; 液壓伺服系統(tǒng); 激振; 正弦振動 Abstract The system of hydraulic vibration system for crystallizer was introduced in the design,To control the sinusoidal vibration of the cylinder, the sinusoidal signal is input into the servo valve by the puter .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 and other major ponents 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 external 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 contents 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 of the pumpdriven 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 ponents are selected through the calculation of the relevant parameters, based on a sample of the products selection, to meet the system requirements.Key words: Crystallizer。 Hydraulic servo system。 Exciting vibration。 Sinusoidal vibration目 錄前 言 11 系統(tǒng)設(shè)計(jì)方案確定 2 伺服系統(tǒng)設(shè)計(jì)方案 2 控制方案 2 主要技術(shù)參數(shù) 2 系統(tǒng)工作情況分析 32 設(shè)計(jì)計(jì)算 3 系統(tǒng)振動 3 液壓缸設(shè)計(jì)計(jì)算 4 油缸的設(shè)計(jì)原則 4 油缸的選型 4 油缸參數(shù)計(jì)算 5 泵的選擇計(jì)算 6 泵的選擇計(jì)算原則 6 系統(tǒng)流量計(jì)算 6 流量計(jì)算 6 泵的參數(shù)計(jì)算 7 液壓泵的驅(qū)動功率及電機(jī)的選擇 7 驅(qū)動功率計(jì)算 7 電動機(jī)的選擇 8 閥的選擇計(jì)算 8 伺服閥的選取 8 液控單向閥的選取 9 電磁換向閥的選取 93 輔助元件的選擇計(jì)算 10 管路 10 壁厚的計(jì)算 10 內(nèi)徑計(jì)算 11 軟管 12 管接頭 12 油箱的設(shè)計(jì)計(jì)算 12 油箱設(shè)計(jì)原則 12 油箱參數(shù)設(shè)計(jì)計(jì)算 13 油箱容量的計(jì)算 13 油箱內(nèi)工作介質(zhì)體積估算 14 系統(tǒng)發(fā)熱功率計(jì)算 14 液壓泵的功率損失 14 閥的損失功率 14 管路以及其它功率損失 15 系統(tǒng)總的功率損失 154 溢流閥的選取 15 溢流閥的作用 155 過濾器的選擇 16 過濾器的配置 16 壓油過濾器 16 回油過濾器 166 循環(huán)冷卻系統(tǒng)的設(shè)計(jì)計(jì)算 17 各個(gè)參數(shù)計(jì)算 17 動力源螺桿泵的選取 17 驅(qū)動電機(jī)的選擇 18 循環(huán)過濾器的選擇 18 熱交換器的選擇 18 計(jì)算散熱面積 18 冷卻水量的計(jì)算 19 加熱器 19 壓力表的選擇 207 液位計(jì)的選擇8 液壓工作介質(zhì)的選取 209 控制閥閥塊的設(shè)計(jì) 20結(jié)束語 22參考文獻(xiàn) 23致 謝 24前 言隨著高效連鑄技術(shù)在冶金工業(yè)生產(chǎn)中的快速發(fā)展和應(yīng)用,結(jié)晶器的振動技術(shù)便成了連鑄生產(chǎn)過程中的關(guān)鍵技術(shù)之一,結(jié)晶器的振動參數(shù),直接影響連鑄坯的質(zhì)量。目前國內(nèi)還主要以凸輪機(jī)構(gòu)驅(qū)動為主,這種方式存在一系列的不足,例如:結(jié)晶器振動頻率,幅度,波形等不可調(diào)等現(xiàn)象。而國外大多采用液壓伺服振動方式,振動的參數(shù)可根據(jù)鋼種,拉速等工藝條件而進(jìn)行改變。與傳統(tǒng)的直流式電機(jī)或交流電機(jī)驅(qū)動的偏心凸輪的結(jié)晶器激振系統(tǒng)相比,