【正文】 械傳動(dòng)相比易于布局和操縱，液壓傳動(dòng)部件由管道相連，故安裝在位置上有很大的自由度，各部件可以安裝在我們希望的位子上。 6) 可以實(shí)現(xiàn)快速而且無(wú)沖擊的變速和換向。液壓傳動(dòng)通過(guò)調(diào)節(jié)液體流量就可以方便地實(shí)現(xiàn)無(wú)級(jí)調(diào)速，而且調(diào)速范圍大。功率重量比大的設(shè)備即重量和體積較小而能輸出較大的功率。 液壓傳動(dòng)是用液體作為介質(zhì)來(lái)傳遞能力的，液壓傳動(dòng)與上述三種傳動(dòng)比較有以下的優(yōu)點(diǎn)： 1) 易于獲得較大的力或 力矩，液壓傳動(dòng)是利用液體的壓力來(lái)傳遞力或力矩的。其他在電力、建筑、水利、交通、船舶、航天、汽車等行業(yè)， 液壓系統(tǒng)也是重要的組成部分。 關(guān)鍵詞 : 鋼管； 切斷； 液壓 武漢工程大學(xué) 畢業(yè)設(shè)計(jì)（論文） IV Abstract The hydraulic system has been in various industrial sectors and in many sectors such as agriculture, forestry, animal husbandry and fisheries are more widely used, and the more advanced equipment, its application is also part of the hydraulic system the more so, for machinery for professional staff, learn hydraulic technology, skilled design simple hydraulic system is the basic professional requirements. G30 Steel cut off the hydraulic system design, the principle is the use of hydraulic technology, steel cut in the saw blade to achieve fast forward, working forward, rewind and steel pipe clamp, pine folders and other processes, the entire cutting process automation. Hydraulic system design is mainly based on the hydraulic system of the machine, the hydraulic system than other systems have many advantages, and hydraulic technology to today has been very mature, easy to design, calculation, operation of the system. In the design of the hydraulic system, the first based on available data, bined with the desired objectives, the system demonstration program began, and then determined by calculating the initial parameters of the system, and then select the ponents required for the hydraulic system, then the related checking, the final checking the results to determine whether the system is based on reasonable and feasible. Keywords： Steel； cut off。武漢工程大學(xué) 畢業(yè)設(shè)計(jì)（論文） I 目錄 摘要 ................................................................................................................................................................................. III ABSTRACT ....................................................................................................................................................................... IV 第一章 緒論 ...............................................................................................................................................................1 液壓系統(tǒng)在工程中的應(yīng)用 ....................................................................................................................................1 液壓傳動(dòng)的優(yōu)缺點(diǎn) ................................................................................................................................................1 液壓系統(tǒng)的分類及液壓功能回路 的作用 ...........................................................................................................3 第二章 系統(tǒng)方案論證 ................................................................................................................................................6 液壓泵站的論證 ...................................................................................................................................................6 液壓執(zhí)行元件的方案論證 ...................................................................................................................................8 液壓控制部分的方案論證 ...................................................................................................................................8 電氣控制部分的方案論證 ................................................................................................................................ 10 系統(tǒng)原理圖的初步推論 .................................................................................................................................... 11 第三章 主要參數(shù)設(shè)計(jì)和元件選擇 ........................................................................................................................ 15 液壓執(zhí)行元件的設(shè)計(jì)計(jì)算 ................................................................................................................................. 15 計(jì)算系統(tǒng)的性能參數(shù) ........................................................................................................................................ 23 主要元件的選擇 ................................................................................................................................................ 27 第四章 液壓性能的驗(yàn)算 ......................................................................................................................................... 32 武漢工程大學(xué) 畢業(yè)設(shè)計(jì)（論文） II 驗(yàn)算壓力損失 ..................................................................................................................................................... 32 液壓系統(tǒng)溫升驗(yàn)算 ............................................................................................................................................ 32 第五章 液壓裝置的結(jié)構(gòu)設(shè)計(jì) ................................................................................................................................. 34 液壓裝置的類型 ................................................................................................................................................ 34 液壓泵站的類型及其組件的選擇 ................................................................................................................... 34 油箱的結(jié)構(gòu)設(shè)計(jì) ................................................................................................................................................ 36 總結(jié) ..............................................................................................................................................................................