【正文】 學院畢業(yè)設計 II Abstract This paper mainly introduces the hydraulic hoister hydraulic cylinder graduation design. The hydraulic cylinder design including the system work pressure determination, the deter mination of hydraulic piston diameter and determination of the diameter of piston rod and hydraulic cylinder wall thickness and outer diameter of the cylinder head thickness calculation, sure, the length of cylinder block and piston rod stability of determined checked. Combining with the traditional design and puter aided engineering technology, first on the basis of experience formula hydraulic cylinders, determine the installation, and designs the hydraulic cylinder piston and piston rod parameters, checked matching connecting bolts and pin shaft, etc.。 作 者 簽 名： 日 期： 指導教師簽名： 日 期： 使用授權說明 本人完全了解 大學關于收集、保存、使用畢業(yè)設計（論文）的規(guī)定，即：按照學校要求提交畢業(yè)設計（論文）的印刷本和電子版本；學校有權保存畢業(yè)設計（論文）的印刷本和電子版，并提供目錄檢索與閱覽服務；學?？梢圆捎糜坝　⒖s印、數(shù)字化或其它復制手段保存論文；在不以贏利為目的前提下，學校可以公布論文的部分或全部內(nèi)容。本人完全意識到本聲明的法律后果由本人承擔。 作者簽名： 日期： 年 月 日 導師簽名： 日期： 年 月 日 湖北工業(yè)大學商貿(mào)學院畢業(yè)設計 V 目 錄 摘 要 ........................................................................................................................................... Ⅰ ABSTRACT ................................................................................................................................. Ⅱ 目 錄 ........................................................................................................................................... Ⅲ 引 言 ............................................................................................................................................. 1 1 設計說明 ................................................................................................................................... 3 2 設計條件 ................................................................................................................................... 3 3 油缸內(nèi)經(jīng)機活塞桿直徑確定 ................................................................................................... 4 油壓確定 ............................................................................................................................ 4 3. 2 計算油缸內(nèi)經(jīng) D................................................................................................................. 5 強度要求 ............................................................................................................................ 5 長細比要求 ........................................................................................................................ 5 4 工作油壓計算 ........................................................................................................................... 6 5 缸體壁厚計算及強度計算 ....................................................................................................... 6 壁厚計算 ............................................................................................................................ 6 5. 2 強度計算 ............................................................................................................................ 7 6 缸體與法蘭聯(lián)接螺栓強度計算 ............................................................................................... 8 6. 1 接應力計算 .......................................................................................................................8 6. 2 螺紋牙強度計算 ...............................................................................................................9 6. 3 擰緊力矩計算 ...................................................................................................................9 7 活塞桿與活塞連接螺母強度計算 ......................................................................................... 10 7. 1 螺紋牙強度計算 .............................................................................................................10 7. 2 螺紋接觸表面承壓應力計算 ..........................................................................................11 8 活塞桿吊頭及吊軸計算 ......................................................................................................... 12