【正文】 輪機(jī)構(gòu)、螺桿機(jī)構(gòu)傳動(dòng)，工作平穩(wěn)、工作精度高、操作條件好、生產(chǎn)率高，易于實(shí)現(xiàn)機(jī)械化、自動(dòng)化，適于在自動(dòng)線上工作。 1795 年 ,英國(guó)的布拉默發(fā)明水壓機(jī)，但直到 19 世紀(jì)中葉，由于大鍛件的需要才應(yīng)用于鍛造。鍛壓機(jī)械是通過(guò)對(duì)金屬施加壓力使之成形的，力大是其基本特點(diǎn)，故多為重型設(shè)備 。在經(jīng)濟(jì)發(fā)展的過(guò)程中，制造業(yè)起著支柱作用。 該 設(shè)計(jì)分為液壓部分和主機(jī)部分。我設(shè)計(jì)的 “ 300 噸液壓壓力機(jī) ”正是應(yīng)用了電和液的混合技術(shù)。 內(nèi)蒙古科技大學(xué)設(shè)計(jì)說(shuō)明書(shū) II 關(guān)鍵詞： 壓力機(jī)過(guò)載 電液位置控制 液壓機(jī) 液壓系統(tǒng) 液壓缸 電液轉(zhuǎn)換技術(shù) 300 tons of cement products hydraulic press The abstract At present, hydraulic press has been widely used in various fields. Technology also in constant updates. To solve the problem, just from the control of mechanical and hydraulic pressure Angle to consider to make products have a qualitative leap, must introduce good control performance and the information processing capability of electronic technology or electric power conversion technology. I designed 300 tons of hydraulic press is the application of electric and hydraulic hybrid technology. This design is divided into hydraulic parts and main part. The paper firstly summarizes related knowledge of hydraulic and development prospects were described in detail, and then press hydraulic system, working principle and design from the analysis of 內(nèi)蒙古科技大學(xué)設(shè)計(jì)說(shuō)明書(shū) III the main parameters of the system to determine the key design, the hydraulic cylinder. (main dimensions, piston, piston rod and buffering device, exhaust device, etc.). In the design, and on the basis of the choice of system and hydraulic ponents. Secondly, the main part of the main ponents of hydraulic design (beam, and the size of the worktable, column), frame of the strength and stiffness of the , the problem of hydraulic overloading do some simple statements. Finally, this design was summarized. 內(nèi)蒙古科技大學(xué)設(shè)計(jì)說(shuō)明書(shū) IV Keywords: press electrohydraulic position control hydraulic overloading hydraulic system of hydraulic cylinder electrohydraulic conversion technology 目錄 摘要 .................................................................................................................................I The abstract ................................................................................................................... II 第 1 章 緒論 .................................................................................................................. 1 液壓壓力機(jī)介紹 ............................................................................................... 1 液壓機(jī)的特點(diǎn) ................................................................................................... 2 電液比例控制技術(shù) ........................................................................................... 3 電液比例控制技術(shù)概述 ......................................................................... 3 電液比例控制技術(shù)的特點(diǎn) ..................................................................... 4 電液比例位置控制系統(tǒng) ......................................................................... 5 電液比例控制技術(shù)在液壓機(jī)中的應(yīng)用 ................................................. 6 第 2 章 總體方案設(shè)計(jì) ................................................................................................ 8 總述 ................................................................................................................ 8 各分方案的選擇 ............................................................................................ 9 方案綜合與論證 ............................................................................................ 9 第 3 章 液壓系統(tǒng)的設(shè)計(jì)計(jì)算 .................................................................................. 10 系統(tǒng)的設(shè)計(jì)要求 ............................................................................................. 10 概述 ....................................................................................................... 10 設(shè)計(jì)要求 ............................................................................................... 11 確定液壓系統(tǒng)參數(shù) ............................................................................... 11 工況分析 ......................................................................................................... 11 負(fù)載分析及負(fù)載圖 ............................................................................... 11 運(yùn)動(dòng)分析及運(yùn)動(dòng)循環(huán)圖 ....................................................................... 14 初選系統(tǒng)壓力 ................................................................................................. 15 液壓系統(tǒng)圖的擬定 ......................................................................................... 16 液壓回路的選擇 ................................................................................... 16 液壓回路的綜合 ................................................................................... 19 液壓機(jī)系統(tǒng)的動(dòng)作循環(huán) ................................................................................. 19 概述 ....................................................................................................... 19 液壓機(jī)對(duì)液壓系統(tǒng)的基本要求 ........................................................... 20 液壓系統(tǒng)工作原理 ............................................................................... 21 內(nèi)蒙古科技大學(xué)設(shè)計(jì)說(shuō)明書(shū) V 液壓機(jī)液壓系統(tǒng)的特點(diǎn) ....................................................................... 22 第 4 章 液壓元件的設(shè)計(jì)及液壓油的選取 ................................................................ 23 液壓泵的選擇 ................................................................................................. 23 確定液壓泵的工作壓力 ....................................................................... 23 碗定液壓泵的流量 ............................................................................... 23 選擇液壓泵的規(guī)格 ............................................................................... 24 油箱的設(shè)計(jì) ..................................................................................................... 24 空氣濾清器 ........................................................................................... 26 油位指示器 .........................................................